AquaDyne Heavy Duty RHINO I Overflow or Side Wall Returns Size:2" Bottom Drain These airstones produce finer bubbles

These airstones produce finer bubbles for increased aeration efficiency with no increase in pressure

Reduces stress

gently tumbling the media and keeping the bacteria alive

BBM8 Bio-Blox Media 8 Cubic Feet (no bag) (NOT OFFERED DUE TO SHIPPING COST)

or you will risk killing the beneficial bacteria that have grown on them

AquaDyne Heavy Duty RHINO I Overflow or Side Wall Returns Size:2" Bottom Drain These airstones produce finer bubblesThe Rhino I Overflow or Side Wall Bottom Drain is heavy duty, Schedule 80 PVC drain. It can be used as an overflow bottom drain (when used together with vertical riser) or as a sidewall return. All Rhino drains can be installed with extreme confidence in any application by beginners and experts alike. Compare the engineering of Rhino bottom drains to any on the market, and you will see the evident quality. Rhino I Features: Thicker flanges and liner