Plumbing question

fishy_mcfish · 10/16/2017, 01:46 PM

I picked up a tank And it has a corner overflow for the drain but it’s set up with the return line running through the center of the drain line and the drain is loud! Anyone ever had or seen a drain/return setup this way? Or have suggestions on how to quiet it down?

mcgyvr · 10/16/2017, 01:52 PM

If the drain system is only using one pipe/hole then convert it to a herbie setup with 2 holes/drains and run an over the top return..

If it already has a herbie setup then you are simply running too much flow and need to throttle it down by putting a valve on the output of the pump and closing it off..

You can just reduce the flow without converting to a herbie also but a single drain will almost never be quiet..

fishy_mcfish · 10/16/2017, 02:29 PM

How would I go about converting it? I can’t drill it for a return now, it’s already setup. I wanted the guy to drill it for a return line but let him talk me out of it:/
The tank has trim around the top and is eurobraced so I’m not sure how I could mount a hang on back return line?

nereefpat · 10/16/2017, 02:54 PM

I've read about this once on this board, but never seen it.

I would remove the return from inside the drain pipe, and add a return of the back of the tank. Then use a durso style drain, and don't push too much flow through it. Add ball valve to return pump to slow down flow if needed.

outy · 10/16/2017, 11:36 PM

Quote:

Originally Posted by fishy_mcfish

I picked up a tank And it has a corner overflow for the drain but it’s set up with the return line running through the center of the drain line and the drain is loud! Anyone ever had or seen a drain/return setup this way? Or have suggestions on how to quiet it down?

Just like mine. I have two overflows in a 215.

I used a durso and its dead quiet.

Since you only have one you are limited to flow going to your sump, but not much is needed. I run a iwaki 55 at fill throttle in about a 9' rise from sump water level. No way am I getting 550 gph

You should be limited to about 400gph out of a 1" drain for quiet operation with a durso. key is controlling airflow for perfect noise reduction

10/16/2017, 01:46 PM	#1
fishy_mcfish Registered Member Join Date: May 2004 Location: so cal, Rancho Cucamonga Posts: 1,519	Plumbing question I picked up a tank And it has a corner overflow for the drain but it’s set up with the return line running through the center of the drain line and the drain is loud! Anyone ever had or seen a drain/return setup this way? Or have suggestions on how to quiet it down?

10/16/2017, 01:52 PM	#2
mcgyvr Registered Member Join Date: Sep 2003 Location: North Carolina Posts: 20,050	If the drain system is only using one pipe/hole then convert it to a herbie setup with 2 holes/drains and run an over the top return.. If it already has a herbie setup then you are simply running too much flow and need to throttle it down by putting a valve on the output of the pump and closing it off.. You can just reduce the flow without converting to a herbie also but a single drain will almost never be quiet.. __________________ Who me?

10/16/2017, 02:54 PM	#4
nereefpat Registered Member Join Date: Apr 2016 Location: Central Nebraska Posts: 3,190	I've read about this once on this board, but never seen it. I would remove the return from inside the drain pipe, and add a return of the back of the tank. Then use a durso style drain, and don't push too much flow through it. Add ball valve to return pump to slow down flow if needed. __________________ Pat Current Tank Info: 125 in-wall , 40b sump. 6 bulb T5. ASM G2 skimmer. LPS and leathers

10/16/2017, 02:29 PM	#3
fishy_mcfish Registered Member Join Date: May 2004 Location: so cal, Rancho Cucamonga Posts: 1,519	How would I go about converting it? I can’t drill it for a return now, it’s already setup. I wanted the guy to drill it for a return line but let him talk me out of it:/ The tank has trim around the top and is eurobraced so I’m not sure how I could mount a hang on back return line?