Noisy bean animal drain

[Rcollick]

So, how much do do you have into the overflow? Tank to wier drop. I think you would want no more than a 1/2" drop.

With the powerheads off its about a 1/2" drop but with everything running it varies quite a bit. I have been running the mp40 in gyre mode 3 second gyre. Maybe I need to try a different mode.

 

[Dburr1014]

If the 2nd drain is not glued... Try pulling it out a 1/4". That will half your drop and see if it helps.