Plumbing issue

[reefwars]

i put small valves on my airline tubing to adjust how much air goes in , works every time, so instead of restricting the drain itself to make it quiet which is a bad idea if you dont have an emergency you restrict the air , the less air the faster it drains your overflow box(put your finger and block your durso it drains the b ox fast untill air starts to get taken in and make horrible noises) the more air you allow in the slower you make the drain.

[reefwars]

also if you change your stockan to a durso much less air problems too.

[SpateD]

So I picked up 4 valves to control the air intake from the overflow, and it did help a little. Bit I'm still getting a lot of bubbles.

Any other suggestions for the tank to tank, I'm going to try the T on my sump drains.