controlling air "bubbles" from Durso standpipes

[untamed]

Originally Posted by hqgc

2 overflow boxes each with a durso. Any ideas?

Not the best for my solution. You'll need to modify in order to do what I have in mind.

1) Is there room in each overflow to add another drain? Even a 1" might make the entire difference.

2) Can you make a 1.5" connection BETWEEN the two overflow boxes? Even though water would cascade into separate boxes, they would behave like a single box. If this connection pipe was also a drain, you would have created a single box with 3 drains.

Are your overflows glass? If so, drilling them out for another connection might be too difficult. If you can't do either of the above, then my idea would be too risky to run with.