Sump Bubble Trap? 2 or 3 weirs?

[Mykayel]

I bought a Oceanic sump for really cheap, I took out all of the biobals and chambers and all that's left is two weirs/partitions that appear to be a bubble trap: one for the water to go under and then over a second one. Is there really a need for the third weir? Does the water really need to go: over, under, then over?

 

[Dubbin1]

It don't have to if what you have eliminates the bubbles.

 

[Mykayel]

well of course... and it would be perfectly fine with no weirs if you don't have bubble problems, but I'd rather not set it up only to find out that I needed to add extra weirs and have to tear it back down....

So, I ask someone who would know, do you need 3 weirs for a bubble trap or will 2 work just fine?

 

[Mykayel]

Anyone?

 

[Abysswater]

IMO! I feel it is a need it helps pull the flow to surface and the bubbles become surfaced and pop. It helps! I have three mine go's over under and then over before return pump. Plus I have a bubble trap at sump drain outlet. With LR rubble, Helps confine the bubbles in and creates good flow.