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I can't believe you guys banned this poster. By the way, it looks he quit uk420.com too.

good tip on the library. the article about water quality should be read by everyone.

I just started using the Peters Professional Hydro (5-11-26) For fans of fatman7574, you should know that the n-p-k ratio produced by adding Calcium Nitrate to the Peters is close to 3-1-4.

I also grow in 100% coco. There is no silicon in the coco. In order to strengthen stems, supplement with 1-2 ml of a product such as Pro-Tekt or Pro-Silicate or Silica Blast. I'm sure there are others. These products typically contain potassium silicate. So the Pro-Tekt has an n-p-k rating...

You are using tap water right? The water in your state or whatever has very low alkalinity. This is very important for growers to know. Here is a good explanation: http://www.kywater.org/ww/ramp/rmalk.htm Alkalinity refers to the capability of water to neutralize acid. This is really an...

PPFD isn't a theory. Lumens, watts, footcandles etc. are for humans. Photons are what matters. http://www.manhattanreefs.com/lighting2/faq.htm What is PPFD? PPFD stands for Photosynthetic Photon Flux Density, and is the technically correct term when PAR (Photosynthetically Available...

No, the case is loose, it's not melting though and it's been like that for years. But, I will work on venting, that's a good idea. Thanks for the tip.

No need to take another photo. The reflector that I put together yesterday is a larger and better (thanks to the plans) version of this one (which is really just an inverted box) made to cover a 2' x 1' tray. At 3' x 2', the new one hangs perfectly in a DIY veg tent that holds up to...

I put one together tonight based on these plans that holds up to 10 CFL and is 3' x 2'. The two for one adapters (I mistakenly called it an elbow in the first reply) that screw into the socket adapter shown in my first reply hold the bulbs at a 90 degree angle, throwing light down and in...

a money saver instead of the sockets from clamp lights: http://www.homedepot.com/Electrical/h_d1/N-5yc1vZ1xh3Zarcd/R-100170446/h_d2/ProductDisplay?langId=-1&storeId=10051&catalogId=10053 plug 'em right into power strips screw in elbows for two bulbs in one socket

Who knew? Don't I feel like an ass. http://www.gorhamschaffler.com/humidity_formulas.htm

Unless I'm completely misunderstanding your question, than I don't think you understand what humidity is if you think any human can just guess what it is your cupboard. You need a hygrometer and to do some reading...

Dub83's tub inspired me to put this together: This thing is really simple and not automated for anything. The power strips are strapped to the top of a cardboard box. The folding flaps are removed from the box. The box is slightly bigger than the tray that the plants are in. It can rest...

since hg420 is down I was wondering if anyone has this thread in a file?