mag 12

What is the distance from the sump to the return point on the 90? If you are less than 6 foot yes but over that it starts to get iffy.

 

A Mag 9.5 is plenty on a 90 gallon reef, even at 6 foot of head. Check this out: http://www.marinedepot.com/powerheads_pumps_danner_mag_drive_supreme-ap.html

At 6 foot of head, a Mag 9.5 delivers 720 GPH (an Aqueon reef ready 90 gallon tank's overflow is rated at 600 GPH I think). At 6 foot, a Mag 12 delivers 950 GPH. You could easily T off your return line and use the same pump to run a reactor or two and still be OK using a Mag 12 on a 90 gallon tank.

--AJ

 

+1 Aj a mag12 is way overkill i use a mag5 for a return on my 75gal and i have it throttled back some

 

+1 Aj a mag12 is way overkill i use a mag5 for a return on my 75gal and i have it throttled back some

 

Ha! Amature! I use a MAG 18 AND a MAg12 on mine. I should say that I have my sump in the basemrnt and my Tank above it on the first floor. Oh and it is a 135G. LOL.

 

I use a 9.5 on my 90 with the sump directly below the DT and it is throttled down a little.