I got a new ice cap 2k gyre for Christmas and finally hooked it up yesterday . It makes a whistle/humming noise every time it comes on, is this normal?
Not sure if this might be the problem, but make sure that there are no air bubbles in the blade section. I have a 3k and can tell when there is a air trapped inside the blade cage. When this happens I turn off the pump and flip the pump underwater every which way I can and 9 times out of 10, ill see a couple of air bubbles escape.