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Perlite works good and is cheap. Pea Gravel, lava rock, vermiculite, etc.

Haha that's funny I am actually planning on getting some bodhi. Still trying to figure out what I want my free pack to be.. Thanks for the info

I like em both. I want to keep a sativa and an indica on hand. Prefer 60 day flowering times

Well, better genetics...

What would you recommend?

Welcome, I'm the ganjafather and this is my journal/log for my upcoming led grow. I'm replacing a 600w hps setup in a 4x4 tent. I'm also looking for ideas/suggestions/advice for increasing my yield. I'll be flipping around 2 weeks from this post and I'll keep this updated the whole time...

Looks like nitrogen toxicity, the clawing the dark dark green leaves are classic nitrogen toxicity signs. If you havent fed yet, then I'd guess there are nutrients already in the soil. From a quick look on their website they say "This gives Light·Mix® a medium Electrical Conductivity (EC)...

Gorilla's really are the best. If you don't mind spending the extra dough, go gorilla. Also if you need to keep everything contained to the tent, go gorilla. I've used 3 different budget tents, vivosun, Mars and Apollo, they all have pinhole leaks around the zippers. Mars and Apollo both had...

LOL I think you mean they are starting to flower? If they are changing sex aka going hermie, that's definitely not what you want.

Yeah I am, I'll probably start it when I flip. And yeah, for a 5x3, 12 cobs with this setup should give some great results. My flower tent is gonna have 12 for the 4x4 which is basically the same space. This will be my first run flowering with Cobs so I'm stoked. Good luck on your build and...

From what I understand, and I might be wrong, is that led produces more light than heat, but that light turns into heat in your grow space. So the heat is basically the same. Having 12 cobs compared to 1 hps bulb, does disperse the heat over a larger area, which makes it easier to fan up to your...

I'm not sure the par, I don't have a meter yet but it's on the list. This specific tent is veg only, though, so I'm not looking for the the same par readings I'd want in my flower tent. I'm spending about 140$ per 4 cob rail, so this tent in total was about $280.

Thanks man! I actually went cheap on the chips, picked up Gen 5 citi 1212s, 4000k 80cri from CobKits for 8-9$ a piece. The difference in price was about $150 for Gen 5 over Gen 6, so I figure that I won't make that whole 150 back with the slight efficiency bonus of Gen 6. I might be wrong, but...

Well put

Well, the Rails are complete. Probably not very exciting to most of you because it's just a plain Jane cob set up, but I'm pretty happy with it. It's running 450w right now, 8 cobs total. 4 each on 185h-c1400. 4000k temps all around, my temps are sitting at 75-78f currently. I decided to paint...

Ah you are right. They claim it will cover a 3x3 in flower. Still, that's gonna be underwhelming by itself, and a 315cmh or 400 hid will crush it. And I agree their 450w model would destroy a 400w hid, but that's not what they claim on their site. They say the 140w will replace a 400w hid and...

I agree with this. it won't compare to a 400w hid. Nothing at 140w will, period. Not sure why so many people are hyped on them, I guess it could just be a few people that are really loud lol. They have some decent units, but holy fuck are they overpriced. And the misinformation on their site...

Yes I've said twice now I'm exhausting to a chimney. Chimneys go outside. And the plants grow fine, but when your temps are over 80,the bud starts foxtailing which make it loose and shitty. Don't want loose shitty weed. And no, cobs are chip on board leds. You cant put that in a hood.

435cfm

My last grow (pulled a week ago) had baaad foxtailing due to temps getting into the 90s. I just switched my hps setup for cobs and now I've got 675w of cobs running. I have 3 fans down low, blowing up, the Heatsinks are cool to the from all the air blowing up. There is a 6 inch hurricane fan...