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july 7th seedlings planted 5/15
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The Rockwell is pretty quite considering the amount of air its pumping; I have a muffler- air cleaner on the intake side. It’s not a regenerative blower but actual oil less compressor. I took the spare and pumped up a whale pool for my grandson it was full in about 4 min. I bought both mine, from a guy on eBay
I have a used Rockwell air pump, 10 stones in the fish tank and 18 in the raft. The pump puts out 7ml of air at 20 feet of depth. I also miscalculated the power consumption, I forgot to include the air pump it is a 1/3 hp pump, the water pump is 300 watts.
Nothing is removed from the system bio filters designed by me 3- 55 plastic drums in series the whole system runs on 300 watts of power.
950 tilapia range in size from 4-8 inches weight ¼ lb to ¾ lb 6500 gallon pool also 100 red minnows in rafts 2 -40 x 4ft rafts. not many supplements added 1 cup of chelated iron mixed with 5 gallons water this week.1 quart of maxi crop at the beginning, bacteria, ammonia during fishless cycle added fish 5/01/2011 ran without plants until 5/15. Nitrates 7/07/ this morning were 40ppm, ammonia 0 nitrite 0. Flow is 5-8 gallons per minute.
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