Place in tank near airstone or water flows. EcoBio-Pebbles can be placed in the filter box or at the bottom of the tank.
Extra EcoBio-Blocks, -Rocks, -Pebbles may be necessary (according to amount of water, water conditions, and/or number of fish in tank).
As water evaporates, replace as usual.
Notes:
EBB bacteria clarify water. It DOES NOT eliminate inorganic matter. To remove inorganic matter, you will need a mechanical filter system.
Replacement is suggested approximately every 1.5 to 2 years depending on conditions (under test conditions up to 5 years).
EcoBio-Block Family improves water quality, but it does not restrain the growth of aquatic weeds.
EcoBio-Block will start working in approximately 2 - 4 weeks depending on the condition of the tank, the water, the amount of fish, the temperature etc. NOTE: Some people are reporting results in 2 to 3 days. Others are reporting that their tanks are finally, really clear.
For New Aquariums:
It may take several weeks for the water to stabilize after placing the EcoBio-Block in the tank. To be certain that the water has stabilized, either test the water with pilot fish or test water quality.