Aqua Preta Black Earth 

Portioned for 20 gallon long, 29 gallon, 40- gallon tall. This amount will cover an inch deep for these size tanks. Carefully level soil before capping with sand. Add 2 inches of clean sand on top of Aqua Preta Black Earth

• •  100% natural—no synthetics or liquid ferts included or required, ever!
  •  Supports beneficial bacteria and microfauna
  •  Provides a natural environment for fish, shrimp, snails, and plants
  •  Long-lasting root nutrition, never depletes.
  • Once set up the system will never need to be changed, cleaned, or supplemented.