Serenity Turbo Bio Sponge Filter Large SMXY-2822 price May also be added at

May also be added at the rate of a few drops per gallon

Grey Tubes: Prevent algae growth caused by light exposure

dirty or murky as bacteria consume waste and multiply

but can enhance growth

Serenity Turbo Bio Sponge Filter Large SMXY-2822 price May also be added atDescription Biological filtration: The Serenity Medium Sponge Filter SMXY 2820 is a biological filter that uses a sponge to collect detritus and build up a colony of beneficial bacteria that breaks down harmful waste materials in your aquarium, resulting in a cleaner living environment for your fish. Ideal for breeding & spawning freshwater fish and shrimp Ideal for Discus and Angel fish Telescopic height adjustment Provides mechanical & biological