Elpez
Aquarium Advice Activist
CorallineAlgae said:There is no such thing as liquid CO2 that can be added to a tank. Did you add a liquid carbon solution like Excell?
Good call removing the shells and coral from the tank. With those gone you shouldn't need peat moss. Especially if you use RO water to cut your tap water.
It's actually called CO2 booster by API. it does state that it provides CO2 and simple organic carbon.
And yes liquid co2 exists. Liquid co2 is used to make dry ice.
There is also liquid nitrogen! Remmember you could practicaly liquify any gas under the correct temperatures and pressures.