Atlantic Water Gardens Bio-Rocks Filter Media Size:0.50 Cubic Feet While many types of aeration

While many types of aeration tubing float to the surface

Arbor with 4' Swing

water-tight connection for extension cords used outdoors

Maximizes efficiency for all filters without restricting flowrate

heal surface damage

Atlantic Water Gardens Bio-Rocks Filter Media Size:0.50 Cubic Feet While many types of aerationAtlantic Water Gardens Bio Rocks filter media are an effective, lightweight biological media. With all the surface area but 25% less weight than lava rock and half the weight of gravel, expanded clay Bio Rocks are the more stable, less abrasive alternative to heavyweight bio media! Comes with a 5 year warranty. SKU UPC Code Description BB0500 727429001103 Bio Rocks, 0. 50 cubic feet Bulk size ships by truck freight, which requires that you be present