I am using this skimmer on a 40 gallon tall and have been very disappointed. I leave the cup at the lowest level and get about 1/8-1/2" of light brown watery fluid every 1 1/2 weeks. I thought this skimmer was just as good as the turbo flotor multi hang on but it doesnt even compair. I use this on my other system and in the same time get 2" of thicker black skimmate. I wish I had gone with the turbo for both systems. Does anybody think the get good skimmate from the remora pro?