Scott, the most imortant thing is to size the pump to the filter. Your 1.5 hp pump may have been 'over driving' your filter. A bigger filter is fine, but having a pump too big for your filter is an invitation for problems.
Not to 'dis' Hayward, but we've had problems the past couple of years with pumps failing way prematurely on the Northstar, if it were my pool I'd go with a Superpump. If pipe size is a problem, reducers are easy to install.
Hope this at least a little help.![]()
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