I think its supposed to go in the tank below the waterline but I could be wrong as I don't have canister yet.
txfishinlady said:Ok, now on the bubble bar, does it need to spray water above the water line into the aquarium or does it need to spray directly under the water? I hope you understand what I mean. Right now it is above the water level and spraying about halfway across the tank. Thank you again in advance....