I bought this Skimmer 4 months ago, and have always had to adjust it/turn it off whenever my waterm level in sump changes, when I dose certain supplements. NOW it has been a week and cannot get the bubbles low enough to put collection cup back on, it just overflows! I cleaned Skimmer completely and no help. My water level in sump is 7 1/2 inches (recommended is between 7 an 8 ). Has anyone else experienced these problems ? Can anyone give me some help/ ideas ? I just emailed Aquamaxx also. Kinds done, and about ready to change Skimmers !