Pond Boss Forums AERATION Systems questions Adding another Eco7 air pump.

Shutting off one disk will probably increase the size of bubbles in the other two disks but this significiant and does it exceed the manufacturers optimum rating of the diffuser? I doubt it. Air flow to the diffusers depends mainly on how much air volume is going to each diffuser. I am guessing that each of the 3 diffusers are not operating at peak efficiency due to the depth the pump has to produce air. The air volume decreases as the depth increases - depending mainly on the type or style of pump.. It would be best if the pump company provided a cfm rating plotted per each 1 ft of depth increase. Reputable companies provide that inforamtion. Also diffusers have air flow ratings or cfm ranges where their diffuser is optimally operating. Those are often easy obtained from the disk manufacturer. The goal is to match the cfm rating of the pump to the depth of the diffuser/s. I can't imagine that the Eco7 pump produces enough air at 8 ft deep to exceed the operating efficiency of three membrane disk diffusers. IF it does I am going to start buying the Eco7 pump. Slit length of pores in the diffuser and thickness of the diffuser membrane affect the cfm rating and size of bubbles. Numerous variables to consider.