o my god i feel like such an idiot!!! they are almost at the top!! Mike, there are 2 overflows and each are plumbed sepretley. there is only one that you can see in that picture.....would that be my problem?? the stacks are too high??

What are "stacks" in your overflow? Are you talking about the standpipe? If so, that isn't your problem. Mine is level with the top of my overflow.

yes Harvey if his stand pipes or stacks are at the top of his tank well "Yes" it will be a big problem its going to keep filling up from the sump until the water starts going thur the pipes. ANd if that means sucking all the water out of his sump to fill the tank. Well that would be the problem.
Harvey how big is your Sump compared to Nanoreefs...


Now Nanoreef is the pipes close to the top of the glass or are they close to the overflow.

how down are the pipes from the top of the tank?

Heya Mike,

IIRC, my sump is 30x24 and has about ~10" of water in it (so 30-ish gallons).

If that is the case, he should be able to add more water to the sump and that should solve his problem. I think he said that wasn't the problem though which leads me to believe that either

a) his drain plumbing has too many restriction in it slowing down the flow
b) his drains aren't 1"
c) I'm totally out in left field and don't know what's going on :lol:

This would be my guess.:razz: :biggrin:

I don't know i have exhausted all my avenue's on what can be done. With out seeing it in person..

:question:

Are your two overflows draining individually into your sump or are they connected together into a single 1" pipe that dumps into your sump? I don't recall whether or not you've answered that question before. Sorry if you have, I must have missed it...

yes harvey that is the question I'm waiting for. If you have 2 liens going into one tee and they have the same diameter well you will have a build up you might say. it will slow down instead of speeding up..

I think this means there are two pipes all the way to the sump... I think only pics can help now

The height of the standpipe shouldn't matter unless its higher than the tank
I remember you said the tank overflows when you turn on the pump if this is the case then you have a problem with the overflow/ bulkheads... when you turn the pump off after an overflow, does the water level in the tank drop? quickly? slowly? not at all?
this is puzzling!

as i said before...
and
which means there is 2 1" pipes draining into my overflow.... and Mike, there is about 2" from the egg crating to were the water goes IN for the drain..... please let me know if you need me to be more thorough.