Steve,
I've been running a Knop on my 55 for over a year. With the original Rio pump, it was erratic and, while it never overflowed, it often produced wet foam and I had to watch it like a hawk.
I was ready to get another skimmer until I replaced the Rio with a Maxi-Jet 1200 with venturi kit (Premium Aquatics). It became a very different skimmer producing smaller bubbles and good dry foam. I've had no more problems and am now, at last, satisfied with it.
Can't say this is a cure all as some others have reported continuing problems after the upgrade but it works for me!
Dick
[This message has been edited by FishDaddy (edited 02-08-2000).]
I've been running a Knop on my 55 for over a year. With the original Rio pump, it was erratic and, while it never overflowed, it often produced wet foam and I had to watch it like a hawk.
I was ready to get another skimmer until I replaced the Rio with a Maxi-Jet 1200 with venturi kit (Premium Aquatics). It became a very different skimmer producing smaller bubbles and good dry foam. I've had no more problems and am now, at last, satisfied with it.
Can't say this is a cure all as some others have reported continuing problems after the upgrade but it works for me!
Dick
[This message has been edited by FishDaddy (edited 02-08-2000).]