The value of a biological filter depends on how well it performs the tasks of oxygenation, ammonia conversion and gas exchange on a long term basis. In the wet/dry filter, air and water mix as water trickles over an exposed filter...
For glass or acrylic aquariums up to 60 gal.
Flow rate 300 GPH.
3/4" bulkhead outflow A built in overflow is the most efficient method of draining aquarium water to a filter. If your aquarium does n...