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Sorry it took me so long to reply. With that grow size, I would recommend at least a 400 w, my grow room is smaller than yours and a 400 does the job nicely. As for the cool tube, you need five things plus the light, ballast, and hood. Hurricane lamp, its a clear class cylinder that has two...

You're definitely gonna need some good ventilation, such as a cool tube, though the benefits are definitely worth it. I recently added a 400 hps and my temps shot up to the high 80's low 90's, though I just rigged up a homemade cool tube and things are running smoothly at 78. If you want you...

Well I have my grow box setup in my room, and I also smoke cigarettes in the room. My question is, will the cigarette smoke get ventilated into the grow box and adversely affect my plants growth?

Boiling the water will temporarily raise the ph level, though as it cools the ph will return to what it was before boiling...basically, the ph doesn't change in the end.

hmmm. well hopefully the noise will end, because it wasn't making any noise when I first turned it on. I just hope my bulb doesn't explode while i'm gone...because that would suck.

It's definitely coming from the bulb, it's an infrequent noise sort of like a very quiet alarm clock.

Alright thanks guys! I raised my light by about 10" and the temps are now around 78-80. But I have one other quick question, are the hps bulbs supposed to make a slight bit of noise?

I just installed a 400 w hps in my grow room that is 3x3x 5.8. I have three intake fans located towards the bottom of the room (all 80 mm and one 120 mm), and I also have four outtake fans that are all 80 mm, and my temps hover around 85 F. My light is about 18 inches away from my plants, and...

Phew... Well I'm glad I'm not the only one that was slightly paranoid about somebody watchin me.

I think that if you order in a small to moderate quantity everything should be alright, the feds are after larger distributors like large-scale growers and operations like that...so i wouldn't worry to much.

First, you want to make sure that the fixture has a ballast built into it. Then you need to find the input and output voltage and amperage (input should be 115 or 120v and 10 amps., output will depend on the wattage of the bulb). Once you determine the output, you want to find a transformer that...

A fortnight happens to be 2 weeks, and yes the beginning of vegging takes forever...it's frustrating looking at your babies everyday only to see little to no growth.

My guess is that it has to do with the chemical reaction of baking soda and vinegar, since one it a base and the other is an acid. Once they are introduced to one another, they chemically react and expel c02. As far as growing several inches in one night, I seriously doubt that...though extra...

Cool man, just want to make sure that I do everything right this time...my last grow was very disappointing...i guess I learned some good lessons though, like you need a shit load of lighting for one.

i just ordered a 400 w hps from htg tonight, and it comes with a 400 w hps bulb that puts out 50,000 lumens. The purchase kinda put me in the whole as far as money is concerned, so my question is, am I able to successfully vegetate and flower in just the hps bulb? Or do I need to spring for a mh...

Not seeing the relevancy of the previous reply...

Personally, from my modest experience, it took three-four days for the seedlings to rise from the soil. I've learned from RIU that seedlings only require about 700 lumens per square foot, so keeping with a lower output light at the beginning wouldn't hurt things, also, with an hps or mh you run...

By no means am I a qualified person to any your question definitively, but, I was in the exact same situation that you are in now. I began my first grow by germinating five seeds in a moist paper towel for about three days, then after they had begun to sprout, I transplanted them to soil...

Thanks for all the suggestions, I think I'm going to install one to two more 3" fans close to the bottom of the grow room. The air, I hope, should help cool and circulate around the cfls. This is my first grow, and it's really crazy how many problems and obstacles I am continually running...

Unfortunately I can't upload pics right now, but I can better describe my setup. Basically, I'm using a combination of cfl's and fluorescent tubes to light my plant. I have four 100 watt equivalent clfs within two inches of the plants, and there's no real way to cool those bulbs. The strain I am...