White Sand (1-2 mm). Eco-Complete Cichlid Substrate contains live, water purifying bacteria that makes cycling a new aquarium faster and safer. No rinsing required! Eco?Complete is packed in a water conditioning solution for immediate results! Eco-Complete Cichlid comes in 5 beautiful types, all in 20 pound bags. Loved by aquarium installation and maintenance companies for it's clean low-mess ready-now capabilities combined with lightning-fast break-in time; add this with Ready-Water and you can start enjoying fish in your new setup as soon as you have aerated the water and adjusted the temperature.