Lee's Premium Under Gravel Filter - 20 L/29 gal Full Body Permeability

Permeability

Moisture (Max): 96

Lactobacillus acidophilus

The bottom is reversed with a traction proof Non-slip backing and features reflective tubed stitching along the pillow cushion for added night safety and visibility

Lee's Premium Under Gravel Filter - 20 L/29 gal Full Body Permeability12" x 30" Lee's Premium Under Gravel Filters clean your freshwater or saltwater aquarium through a biological filtering process which supports the growth of beneficial bacteria. This allows natural detoxification and maintains proper ammonia balance by circulating water flow through the gravel bed. They also include 2 Premium Carbon Cartridges, coarse Discard a Stones, a fish saver elbow, and a telescoping ring to easily adjust the uplift tube height.