Ok so I was having issues with every canister filter I tried on my 125 and my LFS suggested this combo so I bought it. It appears to be running fine but my concern is that it has two of the U-Tubes and while one is getting constant flow the other always has an air pocket at the top. Is it just the fact that it is too much filter for a 125 or am I missing something? I am using an Aquatic Life 3700lph pump that claims to be rated up to 976gph. I have attached a pic of the set up.
