ok we got the 75 changed over to our 77 drilled with the over flow going directly into the protien skimmer and seems to be pulling out great amount of smelly gunk...the pic is the amount of gunk in 2 days ..now the problem is we have a lot of tiny micobubbles going into the tank from the return pump about 25 times a day and wondering how we can solve this thanks for the replys
