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420chan is Getting Overhauled - Changelog/Bug Report/Request Thread (Updated July 26)

LED lumens per cubic feet?

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- Thu, 19 Jul 2018 20:52:54 EST L9qbicZu No.146166
File: 1532047974549.jpg -(239887B / 234.26KB, 961x1269) Thumbnail displayed, click image for full size. LED lumens per cubic feet?
I have a tent that is 41 cubic feet. I have 29k lumens from my LED lights. Will this be optimal for that tent space? I don't care about heat, just whether that lumens per cubic foot is good with LEDs. Does anybody have an idea or does it entirely depend on the LED spectrum?
2 posts omitted. Click View Thread to read.
Oliver Sickleterk - Mon, 23 Jul 2018 17:39:38 EST +feR4wOL No.146178 Reply
Oh you americans

Actually it's even half of that. 400W/sqm is considered optimal.
You can go higher, and get something out of it but you'd have to utilize some vertical growing techniques like V-sog, scrog/lst.

LED spectrum wise, get warm white 2700-3500k low cri high efficient LEDs should be at 160-200 lumen/watt (yes 200, check out samsung linear led modules)
These are better than any possible red/blue light at this point. Don't buy the purple crap, nobody in the greenhouse industry uses them.
Hannah Dartgold - Thu, 02 Aug 2018 01:57:39 EST B0kZyQRI No.146219 Reply
The sun puts down about 1100watts per square meter. Does it for free too. If you could control the heat and pay the power bill at that density of light indoors the plants could almost certainly handle it. Maybe if you lived in Barrow, Alaska, kept your tent outdoors during midwinter and powered it with stolen crude oil.
Nell Buvinghood - Sat, 11 Aug 2018 16:09:43 EST +feR4wOL No.146236 Reply
Most of the suns energy isn't used by the plants. And that 1kw /sqm figure is true for high noon near the equator with a clear sky, so...
Anyway that 400W / sqm figure is a general ballpark figure for indoor and it has some caveats.
That was true for HPS light (if you use highly efficient leds it's actually a little bit lower even) and it is meant to get the most out of a particular light meaning:
If you give it more space the quality of the product will suffer, if you give it less space the yield won't be as high.
Of course if you want to get the most out of a particular space you go with more light intensity.
1000W / sqm is still too much (not to say it won't work you are just wasting power and making it hard on yourself.)
600W / sqm if you want to get the most out of an area. Any more again you will be wasting power and it will be harder to keep cool.

2nd grow, im very new to this.

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- Wed, 30 May 2018 06:57:50 EST rkA5IDmJ No.146030
File: 1527677870838.jpg -(275034B / 268.59KB, 1280x720) Thumbnail displayed, click image for full size. 2nd grow, im very new to this.
So i have 3 plants over here and theyre all in 40l pots, two of them are getting these discolorations, besides that they look very healthy. Should i be worried?
9 posts and 1 images omitted. Click View Thread to read.
William Woffingforth - Wed, 01 Aug 2018 07:47:18 EST I5lXmNdy No.146215 Reply
Just found this on one of my plants. what did you do to get rid of them?
Hannah Dartgold - Thu, 02 Aug 2018 01:41:31 EST B0kZyQRI No.146217 Reply
If its just one spot you can just remove that leaf and nip it in the bud that way a lot of the time.

Camoflage a window board grow

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- Mon, 09 Apr 2018 02:02:43 EST Lo7Co/Tg No.145888
File: 1523253763001.jpg -(156467B / 152.80KB, 640x480) Thumbnail displayed, click image for full size. Camoflage a window board grow
What plants and flowers can I grow in the same pot as my weed so it would make my grow less obvious?
A plant that grows roughly at the same speed during the first weeks would be great.

Im asking because I'm starting a window board grow. I live in the fortunate situation that only fellow students can see what I do and my window gets about 10 hours of direct light per day. Enough for an automatic

When they get real tall or obvious I plan to move them inside, under artificial light or behind my windows, which I would outfit with diffusion foil.
15 posts and 7 images omitted. Click View Thread to read.
Lydia Soblingfag - Thu, 28 Jun 2018 22:29:06 EST JxdT0KFA No.146108 Reply
There are plenty of plants that look a lot more like weed then this.

beach sand mix

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- Sun, 22 Jul 2018 16:19:33 EST 4IBo6cDc No.146171
File: 1532290773699.jpg -(25537B / 24.94KB, 416x280) Thumbnail displayed, click image for full size. beach sand mix
What if i use beach sand + compost as media for planting??
4 posts omitted. Click View Thread to read.
Matilda Dembleville - Mon, 23 Jul 2018 21:27:00 EST B0kZyQRI No.146179 Reply
all the dried kelp and calcium mixed in with the sand makes it a nice mix in if you want to add some weird shit to your soil for shits and giggles. i never used it at 50% but it would probably work. i was to try growing in a large loaf of sourdough bread or maybe in unbaked
George Lightspear - Tue, 24 Jul 2018 00:19:19 EST CvsKMy8d No.146180 Reply
>i was to try growing in a large loaf of sourdough bread or maybe in unbaked
Wesley Chettingcocke - Sun, 29 Jul 2018 09:20:08 EST 4yOFCivp No.146208 Reply

>i was to try growing in a large loaf of sourdough bread or maybe in unbaked

Post it if happen

What's up with my plant?

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- Fri, 27 Jul 2018 14:33:58 EST F5Zo2jXE No.146189
File: 1532716438545.jpg -(4265468B / 4.07MB, 4000x3000) Thumbnail displayed, click image for full size. What's up with my plant?
Second time grower here. I previously grew one plant and it turned out okay. I decided to try again. Bought two clones from a dispensary and transplanted them into my grow tent 3 weeks ago. Originally, it looks very healthy; in fact my other plant was the one that was starting to wilt. A week later, the tables had turned and my previously wilting plant exploded in growth and looks really good now. However, one of my plant's stems aren't growing longer, it's only growing fan leaves. Anyone have an idea why this is happening? I couldn't find much information about it.

A little bit of info regarding my set up: 6x3x3 ft grow tent, 125W lamp, 2 inline fans with proper ventilation, 2 more small circular fans inside to circulate airflow. Both plants are using the same medium + nutrients. pH level is 6.8, fairly normal.
Hamilton Blythespear - Fri, 27 Jul 2018 14:36:41 EST F5Zo2jXE No.146190 Reply
1532716601545.jpg -(274310B / 267.88KB, 1000x750) Thumbnail displayed, click image for full size.
Dumping a few pics to show the struggling plant.
Hamilton Blythespear - Fri, 27 Jul 2018 14:40:11 EST F5Zo2jXE No.146191 Reply
1532716811545.jpg -(650365B / 635.12KB, 2000x1500) Thumbnail displayed, click image for full size.
Here's what my healthy plant looks like in relation to my other one. The stems have been stretching nicely.
Sophie Tillingbury - Sat, 28 Jul 2018 21:43:08 EST B0kZyQRI No.146206 Reply
russet/broad mites is my best guess, your healthy one has is too. i had that little curl on the serration tip last summer when i was trying to figure out what was going on. once shit got worse i figured it out eventually, but i was on potassium deficiency from overwatering for a week and nute lockout from too much foliar calcium for another before i decide to try pest control. shit gets bad if you let it get out of hand, but it can be beat pretty easy with the right stuff. a lot of the right stuff you don't want to be applying near flowers though. you can beat them back with out completely eliminating them and then apply DE for further control and rinse the DE out of your flowers once they have resin on them. seems to me like russets don't eat the resinous part of the plant. i have russets in my garden on my veg plants right now and i have autos flowering nearby. i don't spray the autos at all and they don't show problems, if i stop spraying my regulars (still in veg) for 5 days i start to see russet damage so i have this idea that if you can nurse you plant along far enough into flower eventually it protects itself from the pests.

Just fuck my shit up

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- Fri, 27 Jul 2018 16:20:18 EST ZSegG4yv No.146192
File: 1532722818639.jpg -(1755128B / 1.67MB, 3345x2509) Thumbnail displayed, click image for full size. Just fuck my shit up
I was in the hospital for two weeks. While I was out, my friend was in charge of my greenhouse. I come back to see this shit. Any idea what the problem could be?

It’s a light dep greenhouse in California
Sophie Tillingbury - Sat, 28 Jul 2018 21:32:43 EST B0kZyQRI No.146205 Reply
russet mites.
also you're running some big cali dep greenhouse and you're asking for help on 420/crops?
shit by the time you get a reply its likely to be too late, especially considering how damned hot it is. what have you already treated for? post more pics of your grow, even if they look shitty, OP is an OK pic, but moar pics will help.
Doris Gibbertick - Fri, 31 Aug 2018 04:47:10 EST 3cvBQsis No.146294 Reply
1535705230268.jpg -(383240B / 374.26KB, 900x1200) Thumbnail displayed, click image for full size.
i'm just taking a hit of some free image hosting here don't mind me

First time grow help

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- Tue, 21 Nov 2017 06:15:34 EST xLdmvCfa No.145592
File: 1511262934742.jpg -(4988918B / 4.76MB, 4032x3024) Thumbnail displayed, click image for full size. First time grow help
Growing in a tent 8 weeks into flower and two of my plants have been looking worse and worse, everything i try seems to fail so i hope you guys could help my clueless little brain

As you can see the buds are browning and turning crispy but ive seen no signs of mold

Thanks in advance guys
7 posts omitted. Click View Thread to read.
Jarvis Dablingshit - Sat, 14 Jul 2018 21:47:50 EST B0kZyQRI No.146147 Reply
well botrytis and overwatering was already guessed, so i'm gonna hop on the nute burn train because i'm a nonconformist.
OP is your nitrogen over 1000000 ppm?
Caroline Wobbletirk - Sun, 15 Jul 2018 19:17:49 EST NCtp+u6l No.146150 Reply
>1000000 ppm
Liquid nitrogen is the yield TRICK, I tell ya
Graham Buzzbury - Fri, 27 Jul 2018 18:40:45 EST 5R5q7BKE No.146193 Reply
oh shit, I've been having same shit happening to me too.

Going to try this not happening this time around.
My guess is LED too close and overwatering.
Are you using LED light op?

LST right before flowering

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- Thu, 26 Jul 2018 21:29:17 EST WXocC9nl No.146187
File: 1532654957268.png -(131052B / 127.98KB, 768x495) Thumbnail displayed, click image for full size. LST right before flowering
if my plants are about four feet tall au naturel pre-flowering, will I benefit from tying them down at about a 90 degree angle and trying to level the branches?

what i'm hoping to get out of this is mainly a shorter plant with a more spread out yield than a big fat cola on top.

since i have some males i bent them to see how they'd take it and they seem to handle it fine, although i dont have plant ties to keep them in place just yet

>pic related
Martha Grimbury - Fri, 27 Jul 2018 11:42:36 EST NCtp+u6l No.146188 Reply
You should have done this weeks ago.
It'll help, but not much.


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- Mon, 16 Jul 2018 05:21:29 EST aWb7Y/oB No.146151
File: 1531732889357.jpg -(3615993B / 3.45MB, 2448x3264) Thumbnail displayed, click image for full size. Autoflower
I have an autoflower currently on 12/12 because its in there with another photoperiod plant which is done, can I swap the auto back to 18/6 without fucking it up? I've read that true autos won't care about light schedules but I haven't been able to find anything about moving them back to veg schedules after already being in 12/12

Blue cheese auto unrelated
2 posts omitted. Click View Thread to read.
Sidney Cruzzlelodge - Fri, 20 Jul 2018 04:24:00 EST aWb7Y/oB No.146169 Reply

That tent is my big one, I have another 60x60x120 tent and was doing the spiral LST thing, it got way too wide and in the past I've had mold issues flowering in it because its way too small and humid.
Sidney Cruzzlelodge - Fri, 20 Jul 2018 06:17:24 EST aWb7Y/oB No.146170 Reply

Also thats an old plant, was my first autoflower so didn't wana fuck with it too much to see how they grow. The one I'm talking about is really wide.

Lions mane cultivation

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- Tue, 19 Jun 2018 07:56:04 EST hSfS1qf8 No.146068
File: 1529409364423.jpg -(1070884B / 1.02MB, 2560x1920) Thumbnail displayed, click image for full size. Lions mane cultivation
So i grew this baby from a standard bag kit and I'm curious on how to keep it going from here. I understand that I need to keep spraying the now fruitless bag to keep it moist enough for the next flush to start but I'm wondering if I could take some mycellium samples and make some cultures from it. I researched a bit but have found information on how to start a culture from spores but not so much on how to start one with mycellium. Any help would be much appreciated.
>just use the spores
I tried to take spores from my fruit but I didn't seem to get many or if any. Ive only ever taken spores from a few mushrooms and this print doesnt really look like a print. Ill try and post that before I get home to see if anyone has suggestions or words of insight.
5 posts and 4 images omitted. Click View Thread to read.
bresscelsus - Wed, 20 Jun 2018 14:01:01 EST Y/TIWb/2 No.146079 Reply
1529517661664.jpg -(27155B / 26.52KB, 415x376) Thumbnail displayed, click image for full size.
the irregular shape of the spore print isnt that suprising as the fruiting body itself doesnt look like any mushroom in the common understanding. if you hadnt provided context id have thought that to be calcination from hard water.

its possible to use a gas burner to ensure sterility at your work station since the up drift caused by it creates a cone in which virtually no particles descend. i prefer an SAB but tbh both are a giant pain in the ass. the burner since it drives me on the verge of melting and the SAB since it severly hinders mobility and the ammount of material one can work with at a time. if you opt for an SAB get the biggest and most sturdy one you can work with.

concerning your picture from mycotopia, you should always flame sterilize the needle. alcohol does not sterilize things, it merely disinfects them. cleaning a syring with boiling water is fine, tbh im such an inecological shithead that i just get a bunch of them for cheap. .05€ a pop wont kill my wallet, though it does have a negative impact on the ecosystem.

expanding a culture from tissue samples is as easy as placing a uncontaminated piece of tissue on a suitable growing media. considering the shap of your fruiting bodies it might be hard if not terribly uncomfortable to get a piece of inner tissue so perhaps you should instead opt for making multiple attempts at once so atleast some will pull through clean at the first iteration, if not you can always isolate a clean section of a petri dish and transfer that to another in order to expand a clean culture. i really like the gamma ray presterilized polystyrene dishes, but if extra cost in electricity and labour doesnt phase you, you can go for borosillicate dishes. its just that i easily break shit and theyre a bigger starting investment
generally starting a culture from spores is prefered since it starts a new generation with fresh genetics untainted by senescense but since you dont intend to grow your species in the wild, tissue cloning should be fine as you can control the environmental parametres to get proper fruiting.
but keep in mind that both tissue cultures as well as spore cultures require either cleanliness or tenacity especially since you just started

i havent really found a truely complete source for amateur mycology, im afraid that for now youll be stuck with comparing multiple sources. i recommend The mushroom cultivator or just about anything by paul stamets, the shroomery and the starter video series by marc keith aka roger rabbit and some scripts for practical microbiology courses. you can easily find a ton of video and text material provided by universities that explain techniques and methodology in a comprehensive manner. i was lucky enough to blow like a dozen credit points on microbiology courses in uni
-if you fail to locate marc keiths video series i could upload it to some filehoster. since he supposedly only produced the series to finance his wifes cancer treatment, i have no moral quarrels about sharing my copies, seeing as shes already passed away some time ago.

concerning probiotics. i guess fermenting probiotics was an improper phrasing. i just ferment a lot of food such as sauerkraut, joghurt, kimchi and kefir since i appreciate their taste and like to invest some time in cultivating microorganisms and convincing myself that there is such a thing as self sufficiency. not like ive actually given any effort to isolate a strain this far but since the foods themself are healthy even if you do not believe in the symbiotic benefits of probiotic organisms. and i continue to rape my colon with alcohol and drugs so a few lacto bacs extra certainly wont hurt me. might try to cultivate the shirota strain from yakult, not because i especially like yakult, but i like pirating shit, and microorganisms. im so fucking drunk.
John Billingfuck - Mon, 16 Jul 2018 10:32:20 EST EmkdJiOB No.146154 Reply
1531751540015.jpg -(1188629B / 1.13MB, 2560x1920) Thumbnail displayed, click image for full size.
Wow thank you so much for your information!
Ive been researching a long time and this is some grade a info. Sorry for the late reply. I started a new job recently. I'm gonna have a significant pay increase so I'm gonna try and build a shed lab for fun. Ill look for those vids today and let you know here.
>if youre still around
pr - Thu, 19 Jul 2018 02:24:27 EST 91FQ6Zw9 No.146164 Reply
no worries, just be sure to take your time when it comes to planning. nothing worse than realizing a flaw as soon as youre done.

is that ginger? dont try to eat the leaves, they taste like eucalyptus soap.

Is this COB good for growing in space bucket?

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- Fri, 13 Jul 2018 05:16:57 EST YBPdJ10D No.146134
File: 1531473417736.png -(229586B / 224.21KB, 544x572) Thumbnail displayed, click image for full size. Is this COB good for growing in space bucket?

Are two of these cob good for an auto flower?
1 posts omitted. Click View Thread to read.
Priscilla Fessleford - Fri, 13 Jul 2018 16:36:44 EST ol/Sob4l No.146137 Reply
200w is going to cook your bucket
a 50w cree will be more then enough or a quantum board
Basil Blummlestone - Fri, 13 Jul 2018 23:12:56 EST YBPdJ10D No.146140 Reply

Is it cool to just run the 100W? I'd plan to have a heat sink and exhaust fans so that'd be fine right?

Just worried about how many lumens my baby is going to need
Nicholas Crankinladge - Sat, 14 Jul 2018 06:29:34 EST ePUTzbMD No.146141 Reply
Those cheap "100w" COBs are crap. Just get the smallest quantum board or a 50w citizen COB.

Also space buckets are dumb, it would be so much easier to just get a small grow tent that you can put together and take apart in 5 minutes.

Like a month later

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- Wed, 11 Apr 2018 19:01:23 EST CdeKassd No.145896
File: 1523487683856.png -(790769B / 772.24KB, 640x1136) Thumbnail displayed, click image for full size. Like a month later
Bought spores and bags separate.Injected bags about 4 weeks ago maybe a bit longger and these still haven't fully colonised.

Now the bags came in a small cardboard box and the seller said just inject them then put them back in the box and put them in a warm cupboard.

I've half thought maybe it's not warm enough in here but thermometer says it's around 72f in this room.I thought it was colder and the bags seem to be slightly cold to touch
Electric thermometer now says it's 71f and that's under the bag and folded over in the bag(bags now on A tshirt on the floor)

Should I speed them up and put them on my heat mat what a friend got from a mushroom fruiting kit.Or should I just have some patience?
19 posts and 11 images omitted. Click View Thread to read.
Nathaniel Shittinghall - Fri, 06 Jul 2018 01:18:35 EST FSkLuKOs No.146117 Reply
don't heat your colonization space, that's just dumb
which your spore syringe is loaded with, you'd need to get a clean culture to succeed with grains 100%
Nathaniel Shittinghall - Fri, 06 Jul 2018 01:22:03 EST FSkLuKOs No.146119 Reply
contaminants which your syringe is loaded with*
Nell Gissleweg - Fri, 13 Jul 2018 17:07:52 EST vdtZzyP7 No.146138 Reply
I feel like your already half asking this and you are totally going to fuck up that tub if you try because of it

Hello friends

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- Fri, 13 Jul 2018 03:47:44 EST vdtZzyP7 No.146133
File: 1531468064212.jpg -(26353B / 25.74KB, 400x340) Thumbnail displayed, click image for full size. Hello friends

I read this ten and its basically how to grow a lot of grain spawn from well
So I dont think its mentioned does he make the spawn then
>instead of spawn to substrate
he just
>goes from spawn to spawn
>and just throws it into tubs?

>Another one

I am working on a couple of mono tubs and I realized that there are these thee plots that each have a tree in the middle them in the back of my house that are basically big pots of stone bricks, enclosed spaces I can use for growing outdoors, for science of course, never done it outdoors.
And I can maybe get a couple good grows before it gets cold.
I plan on ripping out all the weeds and just leaving the tree, maybe some mushier can grow on it and its good shade and fucking huge so I can just take it out even if it was a bad thing.

so I figure its all just dirt and a bit of depth so I should fill it with a substrate and I dont wanna do poo, but I can get straw I think
So Im thinking
peat, straw or cococoir and lay the grain spawn from that tek on top then the sub again as casing.. but now I am rambling
Is there like an ideal mix? I notice a lot of people use poo and straw but can you just use straw and spawn ?

I might be able to get a lot free, straw/hay I mean

>Whats a good outdoor substrate?

This year's charity case

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- Mon, 21 May 2018 20:33:42 EST 55peluM6 No.146011
File: 1526949222238.jpg -(147043B / 143.60KB, 312x489) Thumbnail displayed, click image for full size. This year's charity case
I helped a friend with some clones that took to outdoor acclimatization poorly, shall we say... Anyway, I weeded out a few that didn't make it, found a better spot with less sun, and all the other general stuff involved with NOT putting domed trays of never-seen-sun clones in full noon sun.
I kept an eye on them, thinking they probably flash friend pretty well, but they mostly bounced back. A few days later, I noted that one of the left for dead plants refused to give up the ghost! Tossed in a corner away from full sun, on her side, amidst the corpses of her sisters, she had turned her head, her one good leaf, back up to the sun!
So this season's charity case has arrived in my life. I don't know what she is, since the trays were labeled but not the individual clones... But she's potentially a Sour Punch #3, or a Chemical Weapon.
6 posts and 2 images omitted. Click View Thread to read.
Sidney Turveydale - Fri, 15 Jun 2018 17:57:00 EST NCtp+u6l No.146064 Reply
1529099820105.jpg -(667855B / 652.20KB, 1224x1632) Thumbnail displayed, click image for full size.
Slowly but surely, she becomes a plant.
George Crebberchodging - Fri, 13 Jul 2018 00:05:37 EST NCtp+u6l No.146129 Reply
1531454737972.jpg -(709139B / 692.52KB, 1224x1632) Thumbnail displayed, click image for full size.
I wasn't planning on planting her, but here she is...
Nell Baffinggold - Fri, 13 Jul 2018 03:00:44 EST uBY6Q3qf No.146131 Reply
that plant looks like its all set up to go crazy as soon as it gets it hooks into all that nice soil.

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