TRUVU DLS Replacement 4 Inch Single Roll
Replacement DLS bio media roll for TRUVU AIO Aquariums
Fits the following AQUASYSTEM AIO Aquariums: 10 FBH, 15 Bow, 20 R, 29 H, 20 FBH, 40 R, 60 R, and also Mighty Max Hang On Wet/Dry
The 4 in. diameter X 4 in. tall rolls of DLS found in the Aquasystem and Mighty Max hang on wet dry filters are highly effective biological filters. The DLS (Double Layer Spiral) material interleaved with a polymeric material effectively separates the layers allowing the water from the aquarium to rain down through the DLS rolls where beneficial aerobic bacteria oxidize ammonia and nitrites.