Plumbing issue

[SpateD]

Okay, so I have built a breeding system, 2 40g's, one ontop of the other. They both have a stockman standpipe, I did drill a hole, and put a piece of airline tubing in it, but nothing else..

My first tank, drops straight down, and 45's off into the tank below. The second tank, 90's down into the sump.

Whats happening on both of these, is massive surges of bubbles are spitting out the bottom of the drain pipes which is causing a lot of airation on the surface of my sump and second tank. Which is also causing a ton of salt creep and evaporation.

I took a video.. hopefully someone has some ideas.

http://s57.beta.photobucket.com/user...da3b3.mp4.html