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You can't use face mounted foam due to hinge binding, then attach the sealant to the inside cut of the box or cabinet (jam of the door) you'll need a more positive attachment than just sticky tape.

I'm kinda in that category. I have a "Large Convertible Hood" by control wizards. It's 24"x24" but I'm running 2 - 400w CHM bulbs in it over a 4'x4' area. If you have a good hood that disperses light well with a 1000w then it will show the same caricaturists with a 400w. If using a 400w hps...

I agree with tity shit. t5 is the way go. even a 4' 4 bulb fixture will give you over 200w and 20k lumens.

Mount the fans on the outside of the box and put some screen on the inside of the box especially on the exhaust, don't want to suck any leaves into the fan.

Get a better calculator. = 1152. So a good 6" fan will do 400 cfm add resistance of filter you get around 350 so 1 exchange every 4 min but that's at max speed. An 8" fan you'll get about 550 cfm out the filter. This fan can be run at a much slower speed to achieve the same results. (less noise...

I agree with vokdling. Make 2 different vent systems. One for the lights one for general ventilation. Do not try to daisy chain all 4 hoods they only have 6" connections. Bring in a 10" supply from outside your room, split this into two 6" lines, run each through 2 hoods. Then either use a 6"...

If you can afford it go for a tube system. T5 is the best available. With a tube and reflector you will get much more even coverage and better yield per watt. + the tube fixture takes up much less vertical space, hence a few more inches for growth. Wish I saw this a day earlier, I'd have...

Cool tube are very inefficient, go with a CMH bulb it puts off less than half the heat of a standard HPS and the color spectrum is way better.

Since you are using distilled water, you may have a calcium def. Without the proper cal & mag the plant has a hard time up taking the N. Try a little cal mag in your next watering. If you don't have any, maybe try 50/50 distilled and your hard water, if it leaves a crust on the faucet it has...

Check the ANSI rating of the fixture you have, you will need a bulb with the same rating. This is what I found for a 150w CMH bulb ANSI Code: M142/E M102/E M81/E here's a bulb link http://www.lightingsupply.com/cdm150-td-942.aspx I use CMH and would recommend the bulb. I've got two 400w bulbs...

A couple of things, you can flower with a MH I have a friend who just won't buy a HPS, and he still gets good bud, but you will get better results from a HPS. You mentioned your rez temp at 72, try and get that down to near 60 if you can, you'll get a much better O2 exchange in the roots, and hi...

Wow too many variables to even guess. Concept of under a deck is great and the earth is the best insulation, but have to consider access and working area in this space. Don't use a dryer exhaust for a intake, you will use the dryer and that will be your room intake while it runs which will ruin...

If you are really going to try 64 sativa's in a 4x4 then you will only want 1 cola per plant. Since you've run this room I'm sure you know how close you can keep a 1k light, so even with a flip now these puppies will be over 2', so I believe you will have to do a lot of trimming underneath. Best...

Get back to the point. You are in the 1st wk of flower, nothing you trim now is worth saving to make hash. ONLY mature plant material can be used to make hash. You have no trich's worth extracting now.

just spend $26 and get the right components. http://www.ballastkit.com/highpressuresodiumhpshidballastkit-p-333.html

Always dry and freeze before any type of extraction

Insulation is alot different than sterile growing medium. And I wouldn't want to start a plant in some 10 yr old or more material filled with god knows what kind of spore, bacteria, or fungus in it.

First you need to bring in air from another room or outside. Then you need to exhaust air out of the room, and best if it can go outside. You'll want your fan on the exhaust, and have the suction side of the fan mounted to a carbon filter. The intake can be passive. (no fan needed) I'd...

I don't see why you are thinking of going from High Intensity Discharge lighting to compact florescent. You can buy a 250W HPS or CMH bulb for less than a 250W CFL. And the cfl is no match in performance compared to a HID. Go buy a 250W Ceramic Metal Halide bulb, less heat than the cfl and a...

Just leave it alone, don't touch. If it's going to recover it will do so without your help. If you accidentally knocked the light over then you need to figure out a better mounting system.