Kootenay Filter KFI 750 Standard Line Carbon Filter, 600 CFM Filter Size:Standard Line KFI 500 w/o flange *There are a few minor

*There are a few minor difference between the 4

Containing pyrethrins and piperonyl butoxide

Sunrise/sunset built in (0-30 mins)

Your plants will (of course) get the optimal amounts of phosphorous and potassium for strong flowering

engineered to provide each device with shared or independent programming

Kootenay Filter KFI 750 Standard Line Carbon Filter, 600 CFM Filter Size:Standard Line KFI 500 w/o flange *There are a few minorStandard Line Carbon Filters from Ruck KFI Standard Line filters are made with virgin activated CKV 4 carbon. Each filter is hand made in North America using a proven filing process making this product one of the best filters on the market. Products from KFI are made with pride and we and ensure our customers receive the highest quality products available. These Carbon filters are specifically designed for the control of VOCs (Volatile Organic