Black Ops Replacement Pre-Filter 12 in x 48 in Black Garden Hygiene and Safety And that's not all: balance-free

And that's not all: balance-free ph perfect technology works around the clock to calibrate and adjust the ph for you

3100°K Green Power or 4200°K color temperature

you notice your stems are crammed full of dense floral growth that buries your stems in thick

12 foot power cord and on/off switch allows for easy operation

Intended for rooms up to 100

Black Ops Replacement Pre-Filter 12 in x 48 in Black Garden Hygiene and Safety And that's not all: balance-freeUse these for a pre filter on you Black OpsNutrients Carbon Filters. Match the pre filter to your Black OpsNutrients Carbon Filter size. Helps to extend the life of your Black OpsNutrients Carbon Filter by keeping dust and other particles out. The black color does not show the dirt as much.