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Led panels

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- Sun, 17 Mar 2019 10:19:45 EST D6OT6Wh/ No.146501
File: 1552832385214.jpg -(19952B / 19.48KB, 480x480) Thumbnail displayed, click image for full size. Led panels
I got hold of a bunch of led panels rated 36W 3850 lumens 4000k
now for the strange part when i took it apart the LEDs are not aimed down but sideways shining into the frame where there is some kid of white diffusion plate
9 posts and 4 images omitted. Click View Thread to read.
Hugh Wanderworth - Sun, 14 Apr 2019 16:56:41 EST S69Ie05p No.146559 Reply
Totally not true.
Normal run-of the mill LED replacement bulbs rarely have above 100lm/watt.
Hugh Wanderworth - Sun, 14 Apr 2019 17:26:27 EST S69Ie05p No.146562 Reply
The LEDs themselves are also only about half the cost.
The heatsink and driver costs amount to about the same when ordering decent quality.

But if you are really that cheap:
230V mains

You can probably find a 110V version of them if you really need them.
If you go ahead and get a bunch of old cpu coolers from somewhere you could pretty much rig up a ghetto light system for dirt cheap.
You'd be handling mains electricity though, so good fucking luck!

Osmosis Systems

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- Mon, 25 Mar 2019 17:21:02 EST S69Ie05p No.146512
File: 1553548862599.png -(27353B / 26.71KB, 800x600) Thumbnail displayed, click image for full size. Osmosis Systems
For the ones of you that do run / think about running a reverse osmosis system for hydro:

This is what I am planning:
All of the osmosis related stuff is below the kitchen sink.
I want to use the tank both for storing the osmosis water as well as mixing the nutrients in.

I will equip the tank (a large drinking water canister) with a ball valve.
My osmosis system will automatically shut off once the ball valve shuts. (It's supposed to do that)
Then I will remove the filling cap of the canister, add nutrients, adjust PH, etc.
When finished I have a hose that I put inside the hydro res.
For draining I want to utilize the pump that is already in the hydro system.

I plan to do this process once a week.
Any thoughts and/or pointers?
9 posts omitted. Click View Thread to read.
Cedric Brookson - Sun, 07 Apr 2019 19:13:44 EST uHoIBLKZ No.146538 Reply
changing the water that often is a waste of nutrients in my opinion, especially during early vegetation. It's only necessary if you're trying to stave off root rot with constant water changes rather than refrigeration or by adding beneficial bacteria, both of which are better options imo. Once you switch the lights to the flowering cycle the plant will be using a lot more nutrients and there's the possibility for salts to build and for nutrient lockout to occur so it's best to change the water more often but early on when the plant is small it's probably not needed. Keep in mind that plants can drink as much as a gallon of water per day depending on their size and atmospheric conditions so you're going to need to top off even if you change once a week. I like to keep some strong nutrient solution and some plain water and add in the amounts of each that I need to replenish my reservoir while also keeping my nutrient levels stable.
Cedric Dartforth - Mon, 08 Apr 2019 13:24:56 EST S69Ie05p No.146539 Reply
you mean drain2waste? Because the other one is recirculating, that's what I've got.
It's a ebb'n'flow system.

Drain2waste is only feastible for larger systems.
This will be a 250W 60cm grow.
If I had 4 times the area and 1KW of lights I'd think about it.

But as it stand there is no space.
Cedric Dartforth - Mon, 08 Apr 2019 13:48:23 EST S69Ie05p No.146541 Reply
Ideally yes, topping the reservoir off would save water and nutrients.
I'd have to just try what works.

And again it's a 250W system with a single plant, if that one gallon figure is accurate I'd have to change the fill the reservoir twice a week at the very least.

The nice thing is though I can always dim the lights and as I am using a 60cm tent the plant should be fine with half that power (It will be 170lm/watt leds)

Either way you slice it once I probably have to change the solution once the water level falls below 30%. Topping it off at that point might be possible or not, but I doubt I can do that more than once before having to discard the waste.

Curling leaves

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- Tue, 10 Jul 2018 23:45:08 EST TdkE6Oti No.146123
File: 1531280708287.jpg -(839240B / 819.57KB, 1088x1920) Thumbnail displayed, click image for full size. Curling leaves
So, my plants are looking a bit afflicted and I can't seem to find anything that matches the looks of the symptoms exactly.

*It's an outdoor grow
*The plants have been growing healthy and fine up until flowering
*Now the leaves around the bud are curling in odd shapes and directions.

Could be an insect infestation and I'm going to be spreading diatomaceous earth to slow it down while diagnosing.

Anyone see this before?
22 posts and 3 images omitted. Click View Thread to read.
GANJA GANJUS - Sat, 25 Aug 2018 17:43:36 EST 9u92qZyz No.146287 Reply
It didn't need sulfur. It just needed shade from the heat and a little more water in the evening.

Eh, oh well.
Lydia Genderdock - Thu, 13 Dec 2018 00:54:15 EST e+Xn10s+ No.146481 Reply
its either a virus spread by insects or your plant got hit by pesticide drift.
Fanny Nicklestock - Sun, 24 Feb 2019 15:20:02 EST SCy+6EdV No.146490 Reply
you just made OP ruin his plants, nice one

Outdoor Grow 2017

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- Sat, 24 Jun 2017 14:12:07 EST PxPD5bNp No.144937
File: 1498327927589.jpg -(2028185B / 1.93MB, 3888x2592) Thumbnail displayed, click image for full size. Outdoor Grow 2017
Hello there fellow green fingered nerds.
Gonna do a loose grow log and hopefully entertain you bunch of degenerates.

This year i'm growing 7 plants. All femenized seeds from a selection of banks.

G13 Haze from barneys farm x3
Jack herrer from greenhouse seeds x1
The church from Greenhouse x1
Cinderella 99, seedbank unknown x2

They popped out of the soil end of april. Using 8ltr water containers for watering, watering each one around 3.4 litres of water daily. Feeding pretty much daily.

Using Hesi neuts and have used the hesi soil neut chart as a rough guide.

They're growing on a roof terrace and I use LST and super topping methods as we have neighbors.

As summer solstice was yesterday thought I woulds start documenting as the more fun changes start to happen soon.
139 posts and 72 images omitted. Click View Thread to read.
Balaeric badman - Wed, 05 Dec 2018 12:16:54 EST a+489i4M No.146472 Reply
I do love me some colour and fast finishing. I registered for them. Fingers crossed for a reply.
Reuben Fopperwill - Sat, 08 Dec 2018 00:09:45 EST B0kZyQRI No.146473 Reply
I'll try and put in a good word for you
User is currently banned from all boards

Spider plant is dying

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- Sun, 09 Sep 2018 12:58:16 EST i6FcVK3v No.146307
File: 1536512296844.jpg -(1667654B / 1.59MB, 2448x3264) Thumbnail displayed, click image for full size. Spider plant is dying
I bought a couple houseplants off of Amazon and this spider plant arrived looking a little sorry for itself. There were some brown leaves and it just didn't look that healthy. It's been 2 weeks and this pic is what it looks like now. Is there anything I can do to nurse this thing back to health?
4 posts and 1 images omitted. Click View Thread to read.
Charlotte Pockhood - Fri, 09 Nov 2018 23:52:26 EST i6FcVK3v No.146433 Reply
1541825546469.jpg -(2010937B / 1.92MB, 2448x3264) Thumbnail displayed, click image for full size.
OP here, totally forgot about this thread. The spider plant was fucked from the beginning and died. I emailed the people on amazon and they sent me a new not-dead one, so there is a happy ending.
Lydia Genderdock - Thu, 13 Dec 2018 00:46:09 EST e+Xn10s+ No.146478 Reply
your over watering it, put it in partial sunlight like window and only water it once it is fully dry. Then water it heavely but dont let it sit with wet feet (drain bottom thing on pot after an hour)
Graham Mecklesore - Thu, 13 Dec 2018 20:55:14 EST D6OT6Wh/ No.146484 Reply
>pot dry as fuck
spider plants like it wet

Any one know what type of flower this is?

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- Thu, 23 Aug 2018 21:44:55 EST ixPisaO8 No.146282
File: 1535075095531.jpg -(2250828B / 2.15MB, 3264x2448) Thumbnail displayed, click image for full size. Any one know what type of flower this is?
Found it growing in New York
1 posts and 1 images omitted. Click View Thread to read.
Oliver Sabblehark - Sat, 25 Aug 2018 16:54:30 EST ol/Sob4l No.146286 Reply
rose hip no doubt about it
Martha Gammersotch - Thu, 13 Dec 2018 16:35:34 EST Rn1U3tRb No.146483 Reply
this nigga eatin rosehip


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- Sat, 29 Sep 2018 08:18:31 EST vrKpl0HC No.146339
File: 1538223511370.jpg -(5460639B / 5.21MB, 4128x3096) Thumbnail displayed, click image for full size. Problem
Do my plants look healthy for 29 days of flowering? (not exactly 29 days, actually - I just switched to 12/12 27 days ago). Also is it OK that dozens of the lower leaves started to wither and fall off since my plants started to bloom? Should I worry about it or it's a natural thing?
7 posts omitted. Click View Thread to read.
Cyril Fanworth - Sat, 13 Oct 2018 07:49:57 EST cXs4G4oR No.146388 Reply
Leaves that don't receive any light don't provide photosynthesis though, they're just dead weight. Plus snipping them off gives your plants a little spook, so they'll grow bigger buds because they're afraid of dying.

Kinda fucked up, now that I think about it.

Anyway holy shit OP I thought my first photoperiod grow was going pretty well but god damn I have a tiny shitty dwarf plant compared to your ubermensch stalks. Dang.
Charles Macklebit - Sat, 13 Oct 2018 14:23:33 EST ef1tcmWF No.146389 Reply
True, they're not completely useless. I've gotten high from vaping just van leaves before, not even any sugar leaves. It's a myth that they contain no THC, but they don't contain that much. Probably best to use for cooking. You can blend up the entire plant, then throw it in a crock pot with a few quarts of some water and coconut oil for a few hours then put it in the fridge and scoop up all the solidified coconut oil and throw the rest away.

The plants xylem moves water and nutrients from the roots up into the rest of the plant. The leaves need these nutrients in order to photosynthesize. The phloem moves glucose and amino acids that are produced from the leaves during photosynthesis to other areas of the plant that need them because they are growing like branches, new leaves or flowers. These are both physical passageways and there's a limited amount of space in those passageways. People do stuff like LST and HST (supercropping) in order to widen the stems and widen these passageways so the plant can take up more nutrients and water.

Your lower leaves on a mature plant are the ones that formed earliest, their phloem, the passageways that take the sugars produced by the leaf where they're needed, are connected to the lower branches. Each successive level of leaves during vegetation is connected to the branches that are farther up. Once it comes time for the plant to begin flowering, it puts out leaves that connect their phloem to the flower sites rather than the branches.

Some rerouting of nutrients can be done and the lower branches can contribute some sugars to the lower bud sites, but they will do so extremely inefficiently because the physical passageways simply aren't connected strongly. In order to keep them alive the plant needs to continue to move water and nutrients through the xylem to those lower leaves, but since there's a limited amount that it can move through these passageways, that means the upper bud sites get less water and nutrients. Once the plant is done with its vegetative growth and has reached its final height after the stretch, the lower branches no longer need any nutrients because they're not growing anymore so you should remove them so the leaves don't take any water or nutrients from where they're needed up top. Their large size makes them take a heck of a lot of water to maintain so they become a net drag on the plant (which is why the plant often naturally abandons them).
Lydia Genderdock - Thu, 13 Dec 2018 00:56:09 EST e+Xn10s+ No.146482 Reply
the bottom leaves arent getting sun so the plant is taking the nutrients out of them to put into upper leaves and the colas

Struggling with plant

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- Mon, 19 Nov 2018 07:26:08 EST EupYREQB No.146445
File: 1542630368116.jpg -(788169B / 769.70KB, 1512x2016) Thumbnail displayed, click image for full size. Struggling with plant
Can somebody please help me figure out what's wrong with this plant, at some point I did cause some nutrient burn but that's fixed now, but I can not figure out what is causing these white spots. It honestly looks like some kind of pest rather than a nutrient issue to me, but I cannot see any insects on the plant. This is my first time growing so I'm a bit lost at the moment.
2 posts omitted. Click View Thread to read.
Lydia Genderdock - Thu, 13 Dec 2018 00:42:26 EST e+Xn10s+ No.146476 Reply
there are 3 possibilities

  1. When you water droplets of water get on the leaf and the water magnifies your ligh burning spots in the leaf.

2. Some sort of mite it doesnt look like spider mite infestation but i would check under the leaves with a magnifying lens to see if you see the webs or tiny spider looking things.

3. Thrips which in my opinion is the most likely, The way the eat the plant is they rub thier face on the leaf until they get to the sap. Thrips arent ussually a huge issue for cannabis production.

Make sure you dont have spider mites ,
if you do have spider mites spray water on the folliage of your plants daily and maybe put on neem oil if its not flowering yet.

Lydia Genderdock - Thu, 13 Dec 2018 00:43:20 EST e+Xn10s+ No.146477 Reply
water on the foliage ruins thier webs and washes them down the drain. Spider mites love dry weather
Jarvis Hicklebire - Thu, 13 Dec 2018 00:50:46 EST YkEHdsG1 No.146480 Reply
1544680246138.jpg -(789655B / 771.15KB, 1512x2016) Thumbnail displayed, click image for full size.
Looks like thrips to me.

Try Neem oil if you're still in veg.

Cannabis Growing Problem - Require Diagnosis

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- Sat, 29 Sep 2018 12:16:19 EST rlpvIPf2 No.146342
File: 1538237779911.jpg -(2631755B / 2.51MB, 3840x2160) Thumbnail displayed, click image for full size. Cannabis Growing Problem - Require Diagnosis
Something is eating my beloved ones. The leaves are getting tiny black spots and discoloured/damaged areas. Pics in the comments. It is feminized WW 3 weeks of 12/12 lights. The disease seems to attack all leaves, could it be spider mite? I have read all the tutorials and didnt find definitive answer.
I ask for advice of more experienced growers, help
4 posts and 3 images omitted. Click View Thread to read.
Sophie Lightridge - Sat, 20 Oct 2018 10:39:12 EST mKqBLAz/ No.146397 Reply
Leaf miners.
They're a real bitch to deal with since most safe pesticides don't kill them.
All I really do is spray the plants down with insecticidal soap or Neem Oil and cut off the effected leaves. If the plant is still in veg, it should be fine after a bit of recovery time. Wash the leaves the next day and try to get rid as much of that honeydew as you possibly can. Do this once a week or more and you should see improvement fairly quickly.
I also crush the effected areas between my fingers, which can damage the leaves but since the little fucks already destroying the leaf, it's not that much of a problem. Just killing the miners by crushing them can slow the spread of an infection.
Just make sure you remove the worst effected leaves. It's better to wait a few more weeks than lose an entire plant to a pest that won't go away.
Spinosad apparently works against them, but I've never seen it sold at any retail shops.
John Segglespear - Sat, 20 Oct 2018 14:28:55 EST ef1tcmWF No.146399 Reply
yup, looks like spider mites. Leaf miners leave damage that looks different but this is pretty typical of spider mites. They look like tiny black dots and leave behind little white spots like that at first. Take the plant outside and remove anything heavily affected, then spray it down real good with a powerful enough jet of water that it will knock them off, then spray on some sort of repellent or killer designed for them. They like to hang out on the undersides of leaves so make sure to spray that real good. The eggs are harder to kill so make sure to keep using the insecticide regularly even after it seems like they're all gone so you kill anything that hatches.
Lydia Genderdock - Thu, 13 Dec 2018 00:49:38 EST e+Xn10s+ No.146479 Reply
I think you have spider mites.

Honestly trash the crop and sanitize the rooom wait a lil bit and start over. you can never fully get rid of mites

Similar smells

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- Mon, 19 Nov 2018 04:16:44 EST aWb7Y/oB No.146443
File: 1542619004231.jpg -(2456408B / 2.34MB, 2448x3264) Thumbnail displayed, click image for full size. Similar smells
I've noticed that everything I grow smells of licorice. The buds themselves smell of the strain they'e supposed to and the licorice is undetectable until ground up, but when I grind it up and sniff it up close, I get the same licorice smell regardless of strain, is there any reason for this?

I've always used the same soil and nutrients, I have some triple cheese that smells obscenely like cheese but ground up and sniffed up close it has the same licorice smell. I'm not complaining, just wondering why this is.

NYC diesel related (also had this smell once ground)
3 posts omitted. Click View Thread to read.
Alice Sobblelock - Tue, 20 Nov 2018 14:24:40 EST aWb7Y/oB No.146456 Reply

From week 6ish unless its a long finishing strain, mostly grow indica
Lydia Genderdock - Thu, 13 Dec 2018 00:36:50 EST e+Xn10s+ No.146475 Reply
its your nutrients temperature light combo.

Cannabanoids are mode through the isopranoid pathway which is very voltile becuase the compounds serve to go into air and attract predators to eat aphids and cool the plant down. These compounds are intentionally unstable and will change vastly with how plants are grown.

Change up your nutes and temps if you want different smells. I have found any weed i grow outside in Minnesota Smells like fucking lemons especially by fort snelling state park

Defoliated my weed plants for first time

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- Sat, 01 Dec 2018 16:20:36 EST I2YuW8V7 No.146464
File: 1543699236818.jpg -(145228B / 141.82KB, 840x448) Thumbnail displayed, click image for full size. Defoliated my weed plants for first time
I'm trying to increase my yields so I cut off most of my leaf 15 days after 12/12, my plants look like pic related but LST'd and topped. Has anybody else done this with good results? Reading online it's like 50/50 people saying do it / don't do it.
Lydia Genderdock - Thu, 13 Dec 2018 00:32:08 EST e+Xn10s+ No.146474 Reply
Defoliate only the leaves that are turning yellow or have diseased spots. If you are familiar with source and sink in plants the leaves are the source and the bud is the sink. The leaves make sugars that the plants will use to produce buds.

Removing foliage can help with mold issues but generally reduces yield. With your grow i would suggest trimming all your side branches off early on leaving only the top cola(s) that will use the vertical space well and give you top value product. No one want a bunch of tiny nugs.


What LED to buy in 2019 ?

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- Sat, 17 Nov 2018 23:56:11 EST D6OT6Wh/ No.146441
File: 1542516971918.jpg -(426765B / 416.76KB, 1000x1000) Thumbnail displayed, click image for full size. What LED to buy in 2019 ?
5 posts omitted. Click View Thread to read.
Albert Blinderridge - Tue, 20 Nov 2018 10:34:19 EST ef1tcmWF No.146453 Reply
Cheap red and blue sets from China work just fine. Even if some lights are more efficient and save you money that way, there's no way it's going to be enough to recoup the difference between a $50 set and a $500 set.

These Mars Hydro sets have been around for a while and have a good reputation:

I went for something even cheaper and less brand name and it still produced very healthy plants.
Phineas Pickshit - Tue, 04 Dec 2018 12:55:57 EST ePUTzbMD No.146469 Reply
Yeah because obviously plant greenness is the only thing that matters, oh and yield. Quality doesn't matter.
Phineas Seblingson - Tue, 04 Dec 2018 16:47:20 EST Az88fn/6 No.146470 Reply
1543960040953.jpg -(26857B / 26.23KB, 570x570) Thumbnail displayed, click image for full size.

Best resource on growing indoors

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- Thu, 22 Nov 2018 12:36:28 EST c3FAgiWQ No.146457
File: 1542908188013.jpg -(525276B / 512.96KB, 1920x1200) Thumbnail displayed, click image for full size. Best resource on growing indoors
I come bearing my heart on my sleave /crops/.

For I am a newbie and need to know what would be the best resource (book/video/site) for growing indoors. I promise I will screencap this and post results.

Please don't hate a guy for askin, just ignore me :)
Clara Finkinkut - Fri, 23 Nov 2018 23:44:35 EST QxaI1eqo No.146460 Reply
1543034675303.jpg -(2368836B / 2.26MB, 3264x2448) Thumbnail displayed, click image for full size.
I've been growing plants indoors for like 4 years. Grew a habanero plant from sapling to ded. I really like this guy's guide:


His method is probably the best way to start growing without too much extra bullshit weighing you down. Also, torrent you a copy of the marijuana grow bible to flip to when you need to learn a specific topic.

This video is good too: https://www.youtube.com/watch?v=EZcVeNMTi6o
It's like 435 pages long and goes into excruciating detail on pretty much anything you would ever want to know about growing. For everything else, ask google.

My tips:
>use 3-7 gallon fabric grow bags for each pot plant, ~1 gallon per foot. it allows more oxygen to get to the roots
>use ~600 watts per 16 square feet
>use LED lamps since they take longer to burn out and convert more electricity into light than heat
>get some urea (nitrogen) bonemeal (Phosphorus) and potash (potassium) and mix it together in a mason jar adding 1 part nitrogen, 2 parts bonemeal, 1 part potash and add 1/4 tsp to every liter of water you give them like the guy in the video does. If you want to get fancy then make another batch with 1 part nitrogen 4 parts bonemeal 2 parts potash and use it when you flower your plants
>the plant is separated into 2 stages, vegatative and flowering. plants need 18 hours of light, blue spectrum heavy light, and more nitrogen during vegatative, they need 12 hours of light, red spectrum heavy light, and more phosporus and potassium during the flowering.
>males don't give you weed, only use them for making new strains, otherwise kill them
>the main way to get new plants is to clone female plants. Get a $4 thing of cloning powder on amazon, snip a branch, dip the end into the cloning powder, and plant it. You will get a new plant with the same genetics as it's mother. Take many clones from one plant or clone the clones as you go.
>blow a fan on your plants to discourage pests, disease, and strengthen the stems
>get a grow tent, it blocks outside light and reflects inside light saving you money
>when your plant has enough flowers on it, rip it out of the soil and hang it upside down on a clothesline like a pair of pants to dry for a few weeks, put it in a garbage bag for a few hours to bring moisture to the surface and repeat until the garbage bag doesn't bring any more moisture out

the mushroom thread

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- Sun, 23 Sep 2018 10:31:09 EST Az88fn/6 No.146320
File: 1537713069048.jpg -(1058632B / 1.01MB, 2048x1536) Thumbnail displayed, click image for full size. the mushroom thread
have you grown mushrooms? are you going mushrooms at the moment? post your shit, i'm interested! i'm on my 4th or 5th grow now, had a bit of a hiatus/depressed laziness so this took a while to get going but anways...

i'll post a few pics of my project that i started on the 12th of this month (cambodian spore syringe i made from a print)

here's the pf cakes i made
31 posts and 17 images omitted. Click View Thread to read.
poopress - Wed, 07 Nov 2018 17:07:37 EST RoIGzPYx No.146432 Reply
yeah most common contams wont really take hold on mycellium
oyster mushrooms are pretty darn fierce when it comes to beating contaminants, at least when compared to cubensis
but i highly doubt that youd speed up colonization this way. complete colonization is one of the strongest fruiting triggers. if you had multiple jars id say go for it and tesst your idea but since you only have one, youd have no idea wether or not it had any impact even if you should succeed

keep in mind that youll lose water if you leave the spawn exposed to the elements. i havent growm oysters indoors but i think youll need someway of maintaining a high RH% around the spawn
Graham Crallerfuck - Wed, 14 Nov 2018 18:03:22 EST VtiMRvcI No.146438 Reply
Is it still legal to ship spores to Wisconsin

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