[mlb75]

embarrassed to say but when I first bought it I had it on my 180, it's always worked well for me though and keeps all my nitrates at basically 0. Every once in a while it'll get wonky but for them most part it's set and forget. I can skim wet or dry reliably anywhere from a full cup of dark green water in a day to straight sewer sludge if I set it dry but that takes a week or two to get good and thick and is on the inside of the neck as much as it is in the cup. I generally clean the skimmer twice a week with the cup about 1/4 full of funky liquid and good coating of sludge on both sides of the cup riser.