Black Ops Replacement Pre-Filter 10 in x 39 in White Grow Lamps Bloom provides a rich mix

Bloom provides a rich mix of trace elements such as magnesium

Equipped with an electronic safety device that protects the pump from dry-running

The Bluelab® Combo Meter is a conductivity

A powerful bloom booster designed to create bigger

automotive or cleaning

Black Ops Replacement Pre-Filter 10 in x 39 in White Grow Lamps Bloom provides a rich mixUse 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 white pre filters give a bright, clean appearance.