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Take a glass of water. Shine a red laser pen through it. Did it come out the other side white? :)

A pc fan needs only two wires to make it spin. But these don't move much air and add in resistance and they're almost useless for all but the tiniest grows. What type of power supply are you using?

How do you get in there to tend and water?

Me too! Check in growroom design as there are numerous threads on this.

This NEEDS to be a sticky. +rep

You should name them "R Kelly green". I keed! I keed!

"Must read" implies there is something of interest contained inside. This is just a question, one that get asked every two days here. Do a search and you will get the answer. Which is to say, you will get no good answer as it is a subjective question. No consensus is ever reached.

Ooh Singapore slings! I'm thirsty.

Actually he told you exactly how to rep people.

Now that's something we can agree on!

I have got to get the nerve up and order some beans. That tinybomb sounds about right for me. Awesome pics. Are you taking them under MH or something else?

Good light meters cost $50-$70. Great ones in the hundreds. Hid lights depreciate noticeably after 6 months particularly MH. I replace mine every two crops. At least I did years ago. This is my second crop after not growing for 10+ years. The cost of changing the bulbs was less than the...

8 x 54 = really happy plants 4 x 54 = happy plants They make plenty of heat, as watts are watts for the most part. They just feel cooler to the touch as their heat is spread over more surface area than a single HID. Ventilation will be needed and must be adequate. Somewhere between 200-400...

Do not bring him laced cookies as a a welcoming gift. Other than that, practice good stealth and don't worry. If you greet him in the street every time with "Holy crap he knows!" running n your head, he'll eventualy get suspicious. Act like you are genuinely glad to have him as a neighboor and...

UV lamps produce ozone. A good reason to not run them a full twelve I'm thinking.

UV production isn't cheap. I'm definitely inline thinking they should be on a mover. I'm thinking putting them around the reflectors, four per hid, is a good start. I'm 50% through my current crop and will be doing a controlled test next run.

My test showed MY fans to be about 12-15% more efficient at pulling.

Lemme show you somethin'!

So where do you think the heat goes when using a cooltube? It does not magically neutralize it on the way down the duct. In fact, not PROPERLY using an air cooled reflector could result in a telltale heat signature. Not many houses have a constant 95•F stream flowing from their roof or soffits...

I just bought a 50 pint dehumidifier from sears. It's not too loud and has auto restart after a power outage and hooks to a drain hose for $180. Pulled my humidity to 35% in twenty minutes from 85%. Took out 3 gallons overnight!