Durso + Sump GPH Capacity - Page 2

SouthFla · 09/15/2016, 07:02 AM

Had a similar problem with noise and bubbles created in my sump from my crappy Durso overflows. I ended up creating exit pipes via pvc fittings in the sump which allowed the water to flow out the bottom and air to vent out the top. Reduced the splashing bubbling gurgling noise by ~80-90%.

Sorry I don't have a picture, but I simply added to my outfall an enlarged angled Y fitting, which allowed the water out and air to escape...

| | Drain From overflow
| |
__
\ \ ___ Air out above sump water level
...\ \ | |
.....\ \| | Angled fitting
.......| /
.......| |
.......| |
....... Water out
...... /|||\

Grayhead · 09/15/2016, 07:33 AM

Even if you use a modified first, I would still take one return and make it an emergency drain.

Grayhead · 09/15/2016, 07:33 AM

Modified durso.....stupid spell check

JohnnyRedd · 09/15/2016, 07:59 AM

Quote:

Originally Posted by jharding08

Returns over the side could fix my anti siphon issues with the current return lines too. They are too far submerged in the water, so when the power goes off or feed, they suck so much water into the sump, even if they are pointed almost straight up.

What should I do with the return lines coming out of the overflow? Just plug them off at the bulkhead?

Or I could run the return lines over the back and still use them through the overflow, but that doesnt fix my siphon issue

I have been salvaging a 240 and ran into a different but similar issue. They had a spray bar with 4 outlets as a return. Not the point. All 4 of the bulk heads were being used as durso returns that were literally crammed in there. I built 4 new dursos using T fittings and 2 inches each of vinyl tubing. Water level in the overflow chamber dropped but I was able to control most of the noise.
I ended up going with 2 Herbies. Nice and quiet and 1750 gph running wide open.
My long winded point is I think you are on the right track by making all 3 some type of drain and running a separately plumbed return. It also gives you a little more control over where and how the water returns to the tank.

ca1ore · 09/15/2016, 05:54 PM

How much flow are you shooting for? When I ran my 180, I used a herbie drain, with a 3/4" siphon and 1 1/4" open channel. Handled 600 gph just fine, and silently, which is more than enough turnover for that tank. Means going to a single return or going over the back (ugh), but split returns are grossly overrated anyhow.

Tank is glass? No way I can think of to over drill (grind really) a filled tank without making a hell if a mess as you have to water cool the hole bit. I wouldn't do it on a filled tank regardless.

NewJack · 09/15/2016, 06:11 PM

there is something called a reverse durso. Google it, or YouTube it. I had the same problem as you. I built one of these and probably 80-90% of the noise went away.

09/15/2016, 07:02 AM	#26
SouthFla Registered Member Join Date: Nov 2001 Location: Miami, Florida USA Posts: 256	Had a similar problem with noise and bubbles created in my sump from my crappy Durso overflows. I ended up creating exit pipes via pvc fittings in the sump which allowed the water to flow out the bottom and air to vent out the top. Reduced the splashing bubbling gurgling noise by ~80-90%. Sorry I don't have a picture, but I simply added to my outfall an enlarged angled Y fitting, which allowed the water out and air to escape... \| \| Drain From overflow \| \| __ \ \ ___ Air out above sump water level ...\ \ \| \| .....\ \\| \| Angled fitting .......\| / .......\| \| .......\| \| ....... Water out ...... /\|\|\|\ __________________ 125g mixed reef, Apex controlled, 30g sump, RO 150sss skimmer, Eheim 1262 return, NextReef MR1 reactor w/Rox C, (2) EcoDrift 8.0 1K-2K GPH, (2) Jebao PP8 1K-2K GPH, (5) 80W ATI T5s Current Tank Info: 125G reef, Alk ~8.1, Ca 410, Mg 1350, 1.025SG

09/15/2016, 07:33 AM	#27
Grayhead Registered Member Join Date: Oct 2011 Posts: 581	Even if you use a modified first, I would still take one return and make it an emergency drain. __________________ 240 Gallon mixed reef, Apex Controlled Radion gen4 pro/T-5 hybrid combo, TBS Liverock Lifereef sump, skimmer, and Fuge 2- MP 40, 1- Vectra M1 return pump, Build thread below http:

09/15/2016, 07:33 AM	#28
Grayhead Registered Member Join Date: Oct 2011 Posts: 581	Modified durso.....stupid spell check __________________ 240 Gallon mixed reef, Apex Controlled Radion gen4 pro/T-5 hybrid combo, TBS Liverock Lifereef sump, skimmer, and Fuge 2- MP 40, 1- Vectra M1 return pump, Build thread below http:

09/15/2016, 05:54 PM	#30
ca1ore Grizzled & Cynical Join Date: Apr 2006 Location: Stamford, CT Posts: 17,319	How much flow are you shooting for? When I ran my 180, I used a herbie drain, with a 3/4" siphon and 1 1/4" open channel. Handled 600 gph just fine, and silently, which is more than enough turnover for that tank. Means going to a single return or going over the back (ugh), but split returns are grossly overrated anyhow. Tank is glass? No way I can think of to over drill (grind really) a filled tank without making a hell if a mess as you have to water cool the hole bit. I wouldn't do it on a filled tank regardless. __________________ Simon Got back into the hobby ..... planned to keep it simple ..... yeah, right ..... clearly I need a new plan! Pet peeve: anemones host clowns; clowns do not host anemones! Current Tank Info: 450 Reef; 120 refugium; 60 Frag Tank, 30 Introduction tank; multiple QTs

09/15/2016, 06:11 PM	#31
NewJack Registered Member Join Date: Apr 2002 Location: Raider Nation Posts: 467	there is something called a reverse durso. Google it, or YouTube it. I had the same problem as you. I built one of these and probably 80-90% of the noise went away.