Black Ops Replacement Pre-Filter 12 in x 48 in White Sierra Natural Science (SNS) The pumps have an inside

The pumps have an inside threaded fittings and the flow is non-adjustable

This product is water Soluble and contains only 1% soluble potash which is a direct reflection of its purity

6 ft power cord with 3-prong molded plug

Used throughout the bloom stage

Black Ops Replacement Pre-Filter 12 in x 48 in White Sierra Natural Science (SNS) The pumps have an insideUse 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.