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Here is the growbox all put together.



I've used Kleenex boxes duct taped to the side of the growbox to act as light traps. The lighting heat is exhausted through dryer duct to the crack above the closet door.



Dryer duct is used to ventilate the box to the scrubber and then from the scrubber to above the closet door. The ducting is just duct taped to the side to the box. I leave a lot of slack in the dryer hose so I can take the top box off and set it aside.



This set up is very stealthy since the computer fans made virtually no noise and the fans are installed inside of the both the growbox and the filter. The ventilation works all on negative pressure, so all the smelly air is filtered.



Technical Details:



Anyone can stick some lights in a box but it's up to the ventilation system to make it work right. The basic rule for ventilation is that the intake area must be 2x the exhaust area otherwise the air flow will be restricted.



The lighting chamber is cooled by a computer fan pushing about 38 CFM. The exhaust air comes out at about 82-84F, but there is little heat transferred to the grow chamber. The lights run about 90F inside the lighting chamber.



The grow area of the box is ventilated by the scrubber with about 10-15 CFM. The air temperature exhausted is about 1-2 F above ambient. The air exchange rate is optimal to provide fresh air to the plants while not stressing the plants out by drying from too much air flow.





Assembled GrowboxHere is the growbox all put together.I've used Kleenex boxes duct taped to the side of the growbox to act as light traps. The lighting heat is exhausted through dryer duct to the crack above the closet door.Dryer duct is used to ventilate the box to the scrubber and then from the scrubber to above the closet door. The ducting is just duct taped to the side to the box. I leave a lot of slack in the dryer hose so I can take the top box off and set it aside.This set up is very stealthy since the computer fans made virtually no noise and the fans are installed inside of the both the growbox and the filter. The ventilation works all on negative pressure, so all the smelly air is filtered.Technical Details:Anyone can stick some lights in a box but it's up to the ventilation system to make it work right. The basic rule for ventilation is that the intake area must be 2x the exhaust area otherwise the air flow will be restricted.The lighting chamber is cooled by a computer fan pushing about 38 CFM. The exhaust air comes out at about 82-84F, but there is little heat transferred to the grow chamber. The lights run about 90F inside the lighting chamber.The grow area of the box is ventilated by the scrubber with about 10-15 CFM. The air temperature exhausted is about 1-2 F above ambient. The air exchange rate is optimal to provide fresh air to the plants while not stressing the plants out by drying from too much air flow. Last edited by Red_Greenery; 07-23-2006 at 06:35 PM ..