Atlantic Water Gardens Bio-Rocks Filter Media Size:0.50 Cubic Feet when temperatures are between 41°F

when temperatures are between 41°F and 65°F

Do not exceed the amount your fish will eat within 3-5 minutes of feeding

Recommended for bottom filamentous algae and chara

which supports the beneficial bacteria that complete the biological filtration process and mechanically remove particulate

Works faster than using straw and keeps water clean and clear

Atlantic Water Gardens Bio-Rocks Filter Media Size:0.50 Cubic Feet when temperatures are between 41°FAtlantic 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