With the water being mostly blue now, I'm still trying to figure out why my filter is still building up pressure so quick. Before I thought it was the Live Algae, and that definitly had an impact, but I'm still building up to 23 PSI within 1-2 hours. And now when I backwash, the water isn't dirty. It's just a milky gray from the DE (before it was often green).

I'm gonna do the Acid Wash tomorrow morning, but I've got a question about it for when I do it. The pool store guy said that there should be a row of about 10 missing fingers in the pump, and that I should check to make sure that these holes are lined up properly. When I cleaned the filter today, not only were there no missing fingers, but there were no holes that I could see.

Does the Hayward EC-65 not have these holes? Or is it possible the previous owner mistakenly filled the holes with new fingers?