Bubbles

[plomanto]

I seem to be getting a great deal of bubbles in my over flow chamber ....they flow thru the sump and thru the trap into the retuen area.....the over flow chamber is about 4"x5" box with holes in the bottom....Just set up the sump yesterday..
I have a 120 gallon tank with two built in drains (mega flow)
A silent one 4000 return pump
also one drain has a tee and a small line feeding the fuge it also gets bubbles...
I heeed some help PLEASE
Thanks Peter

 

[plomanto]

Its plumbed like this.......I have since lowered the drain tubes to under the water level still no change

 

[plomanto]

I have the drawing in MS paint dosent shrink to 500x500 very well

 

[plomanto]

Bump

 

[new2u]

from what i can see it looks like you forgot to include bubble traps which trap the bubbles, i cant tell much from the pic but do you have anything down there? Skimmer? Heater? Bioballs?