Black Ops Replacement Pre-Filter 12 in x 39 in Black Plant Success Your agricultural crops also need

Your agricultural crops also need to load up on carbohydrates during their production phase

If your water contains 30 to 50 ppm Calcium

Advanced high speed quiet fans and upgraded aluminum cooling heat sinks are easy for heat dissipation

RAW Full Up (uptake) contains 10% Humic Acids derived from peat

Black Ops Replacement Pre-Filter 12 in x 39 in Black Plant Success Your agricultural crops also needUse 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.