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If your pond is more than seven feet deep, to properly aerate you need to use bottom aeration (diffuser systems). Deep pond aeration will insure that deep levels of pond water are aerated because air bubbles rise up from the bottom of the pond. We recommend Kasco diffuser systems because they have been independently tested to be up to 44% more efficient than the competition.
Robust-Aire systems pump compressed air from a shore-mounted compressor through self-weighted lines to a diffuser on the pond, lake or tank bottom. The diffuser then continuously releases micro-bubbles that rise to the surface carrying large volumes of water. This induces oxygen-transfer as well as beneficial water movement and mixing.
At 15ft. of depth, 2 diffusers will move 6300 gallons per minute (378,000 gallons per hour!) using 2.5 amps. That is only about .72 a day at $0.10 KW hour!