Micro bubbles in my DT

Goose565

New member
Just finished plumbing my new tank and I'm getting microbubbles in my display. I fixed all the leaks in my return line and I'm still getting them. They're not bad but I don't want to continue until I have it resolved. My bubble trap is working in my sump the only thing I'm coming up with is maybe the pump is causing it or the line is sucking air and I can't find it. Help!!!!
 
Ya I can't figure it out, but I was wondering if any knows about cavitations. I have a hydor pump that has a 5/8 outlet that I've upped to a 3/4. Could that be the cause of my micro bubbles?
 
Is it an external pump? If the inlet on an external pump is sucking air then you would get bubbles from that. Your flow would be weaker then normal as well. You wouldn't see a leak on the inlet side when the pumps running it would probably drip when the pumps off though. I can't say for sure with these small pumps but on big pumps I've seen this happening on if it's cavitating on the outlet you will see the pump shaking and water will spray out where the leak is. On the inlet side the pump won't shake.

If it's a submersible pump then check to make sure nothing is causing turbulence by the inlet of the pump.
 
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It's a sumersable pump, and I've been searching everywhere looking for answers. When I search micro bubbles the examples I find tanks being flooded by bubbles. Mine is nowhere near that extreme. I have a constant minor flow of bubbles. Is that normal?
 
I had a similar situation, until a hobbyist suggest I turn by attention to my skimmer. Turns out the water level in my sump was like at 5.5 inches and the skimmer was producing the bubbles. I raised the sump level up to 7 inches and the bubbles went away. So don't know if that is your issues, but something to look at.
 
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