Overflow box question

TankZombie · 12/26/2018, 07:42 PM

I finally got my 180gal with dual corner overflows up and running, but to keep my water level in my tank where it’s not to high I can only go around 700gph my drains have no problem keeping up with a faster flow but my box’s can’t handle the increased flow the water level rise’s in tank to high.

mcgyvr · 12/26/2018, 10:33 PM

Welcome to the corner overflows suck club...glad Im not a member...there are plenty of you though..700gph is enough...be happy with that..

nereefpat · 12/27/2018, 01:51 PM

I agree 700 gph is plenty.

If you have 2 holes in each overflow, you can convert each one to a Herbie. Then run a return or two over the back. It can handle more flow and be basically silent that way.

12/26/2018, 07:42 PM	#1
TankZombie Registered Member Join Date: Dec 2007 Location: Fenton, MI Posts: 56	Overflow box question I finally got my 180gal with dual corner overflows up and running, but to keep my water level in my tank where it’s not to high I can only go around 700gph my drains have no problem keeping up with a faster flow but my box’s can’t handle the increased flow the water level rise’s in tank to high.

12/26/2018, 10:33 PM	#2
mcgyvr Registered Member Join Date: Sep 2003 Location: North Carolina Posts: 20,050	Welcome to the corner overflows suck club...glad Im not a member...there are plenty of you though..700gph is enough...be happy with that.. __________________ Who me?

12/27/2018, 01:51 PM	#3
nereefpat Registered Member Join Date: Apr 2016 Location: Central Nebraska Posts: 3,190	I agree 700 gph is plenty. If you have 2 holes in each overflow, you can convert each one to a Herbie. Then run a return or two over the back. It can handle more flow and be basically silent that way. __________________ Pat Current Tank Info: 125 in-wall , 40b sump. 6 bulb T5. ASM G2 skimmer. LPS and leathers