I have a red sea reefer 250 with 4 chromis, a small tang, 2 ocelaris and one bengai cardinal fish. the problem is that I have a fleacroller 500 and a deltec 600i. the skimmer stops producing anything after a couple of days, the fleaceroller is so effective that I risk getting 0-0 values. Will a deltec 400i be to big? or other good skimmers that are not to effektive? I think BK dubbelcone 130 might be to big