This little pump packs a punch i had about 4 regular aquarium air pump pumping air in the same tank and this commercial pump outperforms them by far,it saves space if u have multiple air stones its perfect and is very quiet...i would recommend this to anyone looking to buy an air pump....
Buy Hydrofarm AAPA45L 20-Watt 45-LPM Active Aqua Commercial Air Pump with 6 Outlets Now
review for AAPA45L Commercial Air Pump 6 Outlets, 45 Lt Per Minute.The first thing I noticed is that it is smaller that I was especting, good! Later I started measuring air output and obtained 4 points, with all closed outputs I obtained a maximum pressure of 115 mmHg, at 9 liters per minute I measured 70 mmHg, with 12.2 liters per minute I found 60 mmHg and as last point at 14.8 liters per minute I had 50 mmHg, once I put these 4 points in a chart I get a nice straight line that intercepts 26 liters per minute at zero pressure, so of 45 liters per minute announced I only get a measured 26.
I put it to work and replaced 6 small pumps, with about 16 outputs (filters without stone) that left me with 55 mmHg working pressure and 13.5 liters per minute as my chart indicates.
I hope that it would last more than a year, I did not find this pump very noisy but it is noisier than any of the small air pumps it replaced.
As rule of thumb I found that liters of air per minute that can obtain by any air pump it is more or less half of announced in specifications.
As reference 100 mmHg are about 53 1/2 inches of water.After going through so many pumps for my tank, I saw this at amazon at a good price and decided to try it. The item is a GREAT pump, solid, heavy, complete. Rubber feet, connectors, everything you need. The only problem I have is my tank is in my living room and the noise from this pump is just too much for me. I am looking into running it behind a small wall, running the tube through, but haven't tried that yet. Oh, and this is a LOT of air. I just have two long stones under the gravel and this is way much air. You probably have to use three or 4 of the outlets (at least) to reduce the air flow rate to something usable.
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This unit seems to put out a lot of air. I am using to push 4 air stones that are submerged 4 feed in my fish tank and it is producing a lot of bubbles. It is not rated for outdoor use so I built a small wooden box to keep it out of the elements and so far I have not had any problems. I only have 4 hoses connected to it so it was nice when I found out that each of the 6 outputs has its own valve that you can adjust so I just shut off the two outlets that I am not using.Save 31% Off
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