Black Ops Replacement Pre-Filter 14 in x 39 in Black Mother Earth Use with undiluted Bluelab pH

Use with undiluted Bluelab pH Up or Down

adjust settings and calibration by a simple push of a button

Customers who've been growing in sterile media or systems that lack soil tell us that using Piranha

4 industrial locking wheels

Botanicare's redesigned white premium ID trays offer professional hydroponic gardens with superior quality and performance

Black Ops Replacement Pre-Filter 14 in x 39 in Black Mother Earth Use with undiluted Bluelab pHUse 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.