How many EcoBio-Blocks (Rocks, Pebbles) do I need for my aquarium?
Generally you need one EcoBio-Block Aqua or EcoBio-Stone L per 50 to 100 gallons of water; one EcoBio-Stone M per 15 to 60 gallons of water, one EcoBio-Rock per 3 to 40 gallons of water, one EcoBio-Stone S per 4 to 20 gallons of water and one bag of EcoBio- Pebbles for 3 to 20 gallons of water, but this will vary according to the condition of your tank, the water and the amount of fish you have in the tank. (maximum water volume applies to already well-established conditions.
