Return pump?

[oyam123]

would you get the Mag18 (1800 gal 145W) or the Queit one 9000 (2300 gal 145W)? the QO9000 is $10 more. Or just run 2 mag7 that I have, one on each side (1400gal 140W).
Any other pump I should be looking at?
one more idea...OceanRunner 2500 two of them will be (1400gal 76W) and cost $20 less than one mag18.

[Boker420]

The Mag 7 and OR 2500's won't give you anywhere close to their rated GPH after the head loss. You would be lucky to get 1000gph total. I have a Mag 18 running for a return through two 1/2" locline spray bars each 15" long on a 75 gallon tank and it works great. I also have a Gen-x 40 on my frag tank and that gives good flow through an enductor. I think its only 110 watts.

[tico mike]

I had two mag7's running on my 220 and it worked great. It should be plenty of water as far as turnover for skimming/filtering. As long as you have the mag7's (don't have to buy anything else) and are using something else for tank flow anyhow, you'd have the added benefit (albeit slight) of two pumps in case one fails. I'm not big on counting on a return pump for tank flow.