Dr. Tank - #0 Substrate Root Fertilizer

Dr. Tank #0 Substrate Root Fertilizer is a tablet-form root tab that goes directly into the substrate under heavy root-feeding plants. Tablets dissolve slowly and keep nutrients concentrated where the roots are, instead of feeding the water column.A practical fix for the common problem of a good-looking sword or crypt that stops growing after a few months in sand — the plant is not sick, the substrate is simply empty. Count: 30 tablets Type: substrate root tablets Placement: push one tablet into the substrate near the root mass Best for: sand, gravel, and depleted aquasoil