A built-in overflow is the most efficient method of draining aquarium water to a filter. If your aquarium does not have built-in overflow, CPR Continuous Siphon Overflows/Prefilters are the best means for getting water from an aquarium to a filter system without expensive modifications to the tank. They quietly skim up to six times more water than units with tubes.
Regularly from $90.49, Today from $72.39
READ You Asked For It: Innovative Marine Releases Fusion Peninsula Aquariums with Filtration on the Side