help with return

[Zoacoral]

I have a 105 gallon tank, It has 2- 1 inch drains, and 2- 3/4 inch drains. I am wondering what return pump I should use. I will feed my refguim or an algae turf scrubber with the pump as well. I have a 40 gallon sump.

 

[revhtree]

You want to go internal or external?

 

[Zoacoral]

sorry, should have clarified that lol.. I prefer internal.

 

[Zoacoral]

Also, the sump will be inside my stand.

 

[Zoacoral]

bump

 

[Eggs]

I'm not sure if it would be enough to feed the ats (just read the diy on this site, gph would depend on size of ats). Anyway, I think a Mag 7 or something around that gph would work.
I use a Mag 7 on a 150g with two 1" drains, and it runs wide open - thinking about going to a Mag 9.5. I also have a 180g and run both return pumps around 5x turnover. Mag 12 throttled back on the 180g.

 

[Zoacoral]

I have a mag 9.5, but was looking for something a little more efficient.. I ran across a Water blaster 3000 circulation pump, and it uses a 1/3rd of electricity that the mag 9 does. But its only 750 gph..

 

[Eggs]

I agree with the power efficiency regarding the Mags. I've debated often about switching to something else. The reliability that I've experienced with them is the main reason I haven't switched.