a mystery (microbubbles from durso)

[lilrobb]

So,
My 6' tank has an overflow in each corner, each with a durso standpipe - one produces microbubbles like a skimmer, the other barely any.
Swapped the dursos - same effect, what could cause this?

My sump isn't very large so I am fighting microbubbles in the main tank too now...

Robb

 

[mockery]

Did you swap the durso and the original pipe still produced the bubbles?

 

[lilrobb]

Nopes,
Swapped the dursos and the same overflow still produced bubbles - in fact it produced bubbles even w no standpipe...

 

[drnecropolis]

You might be drawing air in from somewhere.. cavitation from a pipe somewhere perhaps?

 

[johnr2604]

DrNecropolis;454319 wrote: You might be drawing air in from somewhere.. cavitation from a pipe somewhere perhaps?

Yep, My guess is a leak thats acting like a venturi.

 

[mockery]

DrNecropolis;454319 wrote: You might be drawing air in from somewhere.. cavitation from a pipe somewhere perhaps?

That is what I'm thinking. Possibly a vertical pipe, maybe the bulk head connection? Is pulling in air.

 

[rolo65]

Mockery;454327 wrote: That is what I'm thinking. Possibly a vertical pipe, maybe the bulk head connection? Is pulling in air.

either that or there's just a loose fitting on your drain somewhere....i had that same problem......basically just cut out my drain and over PVC glued it all together......now i only get bubble when my water lvl get to low........jeez i need a ATO!!!!!....hehe