this is the description of the live substrate
This mineralogically and biologically complete substrate is for planted aquariums and comes in live water that contains purifying bacteria.
Mineralogically complete means it contains iron, calcium, magnesium, potassium, sulfur plus over 25 other elements to nourish your aquatic plants. It contains all the mineral nutrients needed for luxuriant aquatic plant growth without
nuisance algae. This iron-rich substrate eliminates the need for laterite.
Biologically complete means it contains live heterotrophic bacteria to rapidly convert fish waste into natural food for your aquatic plants; creates a natural biological balance which makes cycling a new aquarium faster and safer; packed in Liquid Amazon buffered Black Water solution for immediate organic water conditioning; unsurpassed MacroPorosity for healthy roots and bacterial efficiency. You would need to buy 4 bags of ordinary gravel to equal the surface area of this one bag of substrate.
Other features include: nitrate and carbonate free-will not increase pH or carbonate hardness; there are no artificial dyes, paints or chemical coatings; the natural black substrate encourages the most vibrant coloration in fishes and reduces fish stress; spherial grains for optimum diffusion performance; supplies calcium without raising the pH; lead free.
The Bi-Modal grading naturally separates into 2 distinct layers: 1) Fine layer on the bottom for best root development and 2) Coarse layer on top which conveys oxygen and nutrients to the roots.
