Return Line Question....

grazhopr · 12-04-2002, 08:22 AM

What size is good for a return line if I run a Mag Drive 12 (1200 gph) ? 1/4", 1/2", 3/4" ?

Thanks

Gary D · 12-04-2002, 08:54 AM

My Mag 9.5 is threaded for 3/4" and thats what I run. I actually split it three ways with 3/4" pvc. Two lines run to each upper corner of the tank and one runs down behind the live rock in back to provide circulation.

Geoff · 12-04-2002, 09:15 AM

The manual suggests 1.5" for maximum flow. That is what I run, but then again my total length of my CLS is 8 inches.

G~

Harpo · 12-04-2002, 08:52 PM

If you go to large, the water will have alot of room to cause alot of turbulance at the other end, when reducing back down to your return fitting. I know

Really I don't make this stuff up

Harpo

JDVC · 12-04-2002, 11:12 PM

I've used 3/4" on both my MAG 18 and MAG 12... The 18 is currently T'd and runs to the two 3/4" return bulkheads in my 125, throtled down with a ball valve before the T.

-John