Return chamber size - would you make alterations?

[kilnakorr]

So I designed my sump with a decent size return chamber and drain chamber has ample for my skimmer.
I'm currently thinking of adding a filter roller (like clarisea sk3000), but don't have the space.

Drain chamber: 12"
Return chamber: 10"
Bubble trap (over - under) 2"

I could move a single baffle making the bubble trap under/over instead and 1".

This would give me 9" return chamer and 14" drain which should allow me to squeeze in a small filter roller.

Any issues, I don't realize?

 

[don_chuwish]

Only thing is that your ATO will kick in more often. The water level in a smaller return chamber drops faster.