What was the chance that I bought a replacement pump to replace a burned out one (HF 12 volt pump) and the new one baffled me for some time for not working until I saw air bubbles going into the tank and decided to change the hoses and found that the wheel is put on backwards.
It has a face plate that shows which way the water outlet is going but had to change the hoses to go the other way. Back up and running though.