View Full Version : would this pump be ok?

02/27/2007, 01:58 PM
pump (http://www.marinedepot.com/md_viewItem.asp?idproduct=DN1125) for this overflow (http://www.marinedepot.com/md_viewItem.asp?idproduct=CR1515&idCartRow=4254654&isKit=0) with the water being pumped up about 5' with one or two 90 degree elbows or should i go a little bigger on the pump size?

02/27/2007, 02:21 PM
If this is for your 37 than a Mag 7 will be more than enough for a return. That overflow will work fine with a Mag7 too.

02/27/2007, 03:13 PM
im not a big fan of the CPR overflows. for just a little bit more $$ you can get a Life Reef Overflow which are as good as it gets.

the Mag 7 would be perfect for one of the Life Reef overflows as well.

02/27/2007, 05:58 PM
I second the Life Reef overflow.

02/28/2007, 08:09 AM
should i downgrade the mag to a lower gph?

02/28/2007, 08:16 AM
i wouldnt, just get a ball valve and put it on the return side of the pump. then if its to much you can close the valve a little. the Life Reef overflow is rated at 700gph which is perfect for the Mag 7.

02/28/2007, 08:26 AM
why is the lifereef better?

02/28/2007, 08:42 AM
nevermind, i read. i am definitely going for the lifereef. no pump to get rid of bubbles in u-tube and it starts back after a power outage

02/28/2007, 10:25 AM
the thing i dont like about the CPR is the U-tube is at 90ยบ on the corners. thats a good spot for air bubbles to build up. if you dont have the airlifter pump, its just a matter of time before you have problems. with the Life Reef, or any other brand that uses the standard u-tube, its a smooth bend. plus its clear so if you do get a big air bubble trapped you can see it, and restart the siphon before something goes wrong. with a mag 7 return pump, that should not be a problem though.