Is the total number of membranes 5 or are there 5 diffusers each with 2 or 3 membranes? Your 1hp rotary produces about 12 cfm at 12-14 ft which means it could easily opererate 10 and probably 12 membranes (9" dia) which could circulate your pond much faster than 5 membranes. This means you would get more water upwelling and a faster turnover and could run your compressor fewer hours per day.
Last edited by Bill Cody; 08/14/16 08:50 PM.
