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What does the Quartz do? I found some chicken grit in my local petshop that consisted of ash, crushed seashells, red rock (?) and something else (no salt tho). Would this work as a trace element mix? Also, I have access to a lot of marble dust (paste, since they cut marble with water). Do you...

I'd love to see some pics. How are the sexbuds going in comparison to the choc skunkz?

Ahh been there, done that. Sometime less (flowering time) is more (potency)...

Anyone know where to find any of them cree cob leds in EU?

I've been using epistars for growing salad greens, basil, chili peppers. Truth be told the results surprised me pleasantly for the price per diode. I would definitely recommend them to beginners looking to get into DIY and LED panels. I just buy most of my stuff from aliexpress and I have a...

I'm not 100% convinced on your viewpoint regarding UV diodes but, 730nm and above doesn't sell me either. In any case, I am buying about 20 370-380nm "Epileds" from a Chinese manufacturer this week, so I hope to set up a log/experiment to see what they can do on chilli peppers.

So, guise... Is the UV 410nm a worthy addition to a grow or do you have to go to the 360nm ones to make a difference?

Got any links for that? I've known about diachotaem(whatever, can't spell it)ous earth but I haven't tested that either. Guess I kinda learned to live with the mites...

Is there a chance this could just be gnat larvae? They always look pale to me when they start, and I've seen them a lot! Can't get rid of gnats, I get them every single time.

Dude, you are preaching to the whatyoucall it. I believe you, that's why I think that dude who wrote this paper is crazy. Reads like scienvertisment to me...

www.plosone.org/article/info%3Adoi%2F10.1371%2Fjournal.pone.0099010 Could he be right? He also made a reddit thread about it. He also mentions they "didn't want to bash LEDs too much". http://www.reddit.com/r/microgrowery/comments/27vq86/this_paper_is_a_little_technical_but_let_me_know/

Judging by your moderately low temps and the fact that you used to have gnats, there's a chance that you have overwatered your plant, leading to reduced absorption of nutrients, which manifests as chlorosis... Which I think is an umbrella term for "you done fucked up". Also, if you are using...

Well, that's the thing though. Since diodes are right now so much more efficient, this is exactly the time to be using full-spectrum diodes; you are covering all of your bases and doing it cheaper. I mean, the farreds/infrared seems to work wonders on my seedlings that I'm vegging with the Hans...

Well, you did add a couple of white emiters on your latest panels if I'm not mistaken? I mean, I understand that red and blue may be more efficient in terms of power consumption and producing similar results, but certainly the addition of green light must have its advantages.

"Many previous studies indicate that even with blue light added to red LEDs, plant growth is still better under white light." This is what caught my eye, as I was reading this study a few weeks ago. "Although lettuce grown under CWF showed greater maximal g S than under RB, RGB, or GF, dry...

http://hortsci.ashspublications.org/content/43/7/1951.full What the fuck is this shit, even NASA uses white lights and green light. How is this still a matter for debate?

Voted. You guys with the social media profiles should pass this around. Need to get some votes up this sumbitch.

Good job picograv, just read through this thread for the first time. You rocked this grow.

Hey smokey, can you suggest any drivers for these leds? I want to build a lot of 3-4 piece small lights instead of making a big one (they're actually not for cannabis, but I may even use them to supplement my Hans panel)...

The following is a simple colour wheel from wikipedia. These are complementary colours, opposites "fit" together. The pure yellow that you mention happens to fall in the lowest spectrum that cannabis (and some basil and some lettuces) leaves can be seen. I guess yellow is also usable by the...