What Not To Do To Your DE Filter
OK so with the pool 1.5 years old and still problem of fines in pool I final found 2 hoursto do my first ever annual tear down cleaning of our Pentair FNS 60+ DE filter.
Holy crud Batman! OK so not a pretty picture. Most DE etc at top of unit, between fins at top is completely plugged and when look down the middle you see a core of DE that is still left after removing all the caked up fins.
This pool boy has been good at maintenance, backwashing several times until clean returns when pressure builds up and then adding ~6 lb of new DE via skimmers.
Where did I go wrong or is this what it's supposed to look like?
Snaps attached:
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