Drain outlet height in sump - At what level does your water enter?

R

rhildinger

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[I hope I'm not committing an etiquette violation by posting this both here and on RC, but here goes...

I'm putting the finishing touches on the plumbing for an Oceanic 75G RR tank, with predrilled holes (1" and .75"). I've built a custom 30 gallon under-tank sump, and I have the 1" drain plumbed so that water from the drain outlet enters the sump about 4 inches below water level. This is creating considerable turbulence and salt spray, and I was wondering if it would be better to have the water enter the sump much closer to the surface of the water? Or, perhaps it would be better to have the water enter near the bottom of the sump and let back pressure help relieve some of the turbulence?

Any thoughts?

-Robert Hildinger]
 
[Robert,
Unfortunately, there's not a whole lot you can do to eliminate the salt spray, other than put some sort of lid or cover over the sump where the drain enters. It's being submerged 4" that is creating most of your noise. Shoot for around an inch or so. Hope that helps.
Charley]
 
[You don't want the backpressure as it can lead to "burping" issues where the air is realeased in large amounts once it builds enough to overcome the pressure. Just below the water line is perfect.

There are some pretty elaborate solutions on RC that work. If you put an expander on with bigger tubing at the water level and then a T with a cap on the downside most of the bubbles will rise up through the other side due to the slowed velocity of the bigger pipe. If you need support on the bottom side just run some pipe with a ton of holes through it and the water can go out there!

Look at the third post in this thread. There is a picture!

Hopefuly this makes some sense. I would add a cap on the open air side also with several holes to help with the salt spray!

http://www.reefcentral.com/forums....et+sump]



Edited By kwl1763 on 1112137359
 
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