Black Ops Replacement Pre-Filter 12 in x 39 in White Eye Protection Mixed in small batches

Mixed in small batches

Improved cap functions as a sample cup and as a stabilizing base to stand the meter upright

Rapitest soil pH meter determines the pH (acidity/alkalinity) of garden soil within 60 seconds on the 3

L-amino acids improve the absorption rate of your favorite fertilizers by chelating essential nutrients and making them more available to your plants

Black Ops Replacement Pre-Filter 12 in x 39 in White Eye Protection Mixed in small batchesUse 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.