Mag Drive Return Pump Size

[mx mr bean]

I have a 90 gallon aquarium and am currently running an Aquaglobe return pump. I wanted to switch over to a Mag Drive since my current return pump requires a lot of maintenance and is VERY NOISY... my question is what size Mag do I need to buy?
Thanks Guys

 

[jbird0420]

Got a Mag 9.5 on my 90g, works great! Flow is excellent!

 

[lion_crazz]

Mag 9.5 would be the size I would use. The overflow can handle 600 gallons per hour, so I would make sure you can get all of that out of your return. After head pressure, you will get about 700 gph from the Mag 9.5. Pull a ball valve on the Mag and turn it back slightly.