ISTA Bio Sponge Simple, Efficient and Economical The quality bio-sponge assures greater working life and its dense porous foam tissue forms large and ideal surface area for bacteria colonization and filtration.
Easy to ...
Multi-function internal filters for aquariums, terrariums (i.e. turtle or amphibian tanks) or small ponds.
The 304 is for 5 to 15 gallon tanks
For fresh or saltwater applications.
Both filters come with our Un...