Best air pump for.....

[tezr]

I am wanting to add some air stones to my 185 to increase water flow to the top. What would be the best quiet air pump to run 4 to 6 air stones from a depth of 25"?

Was kind of looking at the pondmaster pumps. I also have 2 125s in this room so if I can figure a non cheesy way of running air to them I would do all 3...

 

[mrunlucky07]

I have read good things about the large pondmaster pumps. The dolphin av-50 is very similiar. I noticed you said quiet and think that is your biggest issue with a larger pump. Most normal "large" aquarium pumps are only 5-10lpm vs the pond sized ones at 50-150lpm.

I recently switched over to some linear piston pumps and am very happy with them over diaphram pumps. They use a more energy and are a fraction louder than diaphram pumps, but should last much longer. I have a cheap chinese 60lpm that is doing fine and a medo which is much more "industrial". The medos have been time proven on ponds for years with great reviews.