Commercial Drip Media Pro is ideal for those who prefer a soilless grow media with a little life in it. CDM Pro gives cultivators precision control to feed liquid nutrients. We start with coco coir that is processed with fresh water and triple washed, low sodium, stable Ph 5.7- 6.2, EC:>0.4MS/cm(1:1.5v/v). Combined with the right amount of perlite and pumice, you have excellent drainage and aeration. This base is supplemented with the right amount of biochar and compost, offering structure, nutrient retention and habitat for soil microorganisms. Finally, there is a light charge of organic amendments.