AquaDyne Heavy Duty RHINO II 4" Bottom Drains Sinking Includes 8 pure strains of

Includes 8 pure strains of beneficial bacteria

It is necessary to add small stones to the inner tube to keep the diffuser weighted at the bottom of your pond or lake (only the MTD-300W comes pre-weighted)

and also helps prevent problems caused by low water level (such as pumps running dry or aquatic plants being exposed)

copper and phosphates

straight cross-bar with wavy pattern

AquaDyne Heavy Duty RHINO II 4" Bottom Drains Sinking Includes 8 pure strains ofThe Rhino II Heavy Duty Bottom Drain is the most durable production bottom drain made in the US that is, unless you spend over $1000. The Rhino II brings commercial quality to your pond at an economical price. All Rhino drains are made from Schedule 80 PVC and are thermal welded by hand to assure top quality dependable welds. All Rhino drains can be installed with extreme confidence in any application by beginners and experts alike. Compare the