Sump: over/under/over? or the other way?

[MikeInToronto]

I only have 3 pieces of glass for baffles for a bubble trap. I've added 2 and now I don't know where to put the last one. Am I supposed to have over/under/over like I've been reading or is it under/over/under?

Like I said I only have 3 baffles so even though 5,7,9,101 might be better, what's the right configuration for 3?

Thanks for help. I included drawings of both.

[banditpowdercoat]

Over/under/over works better, because the 2 overs mean more area for micro bubbles to rise to the surface

[TJSlayer]

I actually thought it was the other way so the bubbles stayed at the top while the water was forced under...so I would say under over under...

I could be wrong but that is what I thought...

[banditpowdercoat]

In your 1st chamber, be it tank drain, or skimmer outlet, the water/bubbles usually get forced down to the bottom due to flow of the drain etc. So, if you now have to go UP and over a weir first, that makes the bubbles want to come out more there. If you went under first, you would be drawing the bubbles off the bottom, right from the direct drain stream, and only have one over baffle for the bubbles to escape.

Mind you, there is all sorts of scenarios etc. What may work in one sump, may not work as well in different sump config

[superduperwesman]

Yeah I say under over under over so most of your micro bubbles get trapped in the first chamber b/c they're at the top and the water is going out the bottom

[banditpowdercoat]

Like I said, in my sump, all the bubbles go to the bottom first. My first chamber is under/over. It was built when I got it, and I watch the bubbles come from tank drain and right under the 1st baffle

[kien]

I have seen both styles used with success. I honestly don't know which one is better, but I'm an over-under-over guy myself