Hello,

Luke the pool professional here in need of more professional help. I have a client with a pool that the filteration system is undersized. I need to find a fix for my client that is workable. Here's what they got.

72,000 gallons, newly painted against my wishes
3.5" shallow
12' deep end
2 HP challenger
TR-140 sand filter

All 2" plumbing
skimmers on separate lines/drain line in the middle 3" line into pump

(1) 2" line to (5) returns at surface level

duel main drains
two skimmers
one cleaner line

Pool filter gets clogged too quickly, have to backwash every visit. Less than one swimmer a week. Sometimes they'll have a party, but that's a rarity. The book calls for a 4" line which I can't provide and two TR-100s. I don't see that happening with the pool already built. Maybe a DE filter or a bunch or cartridge filters in line. Your suggestions?

Luke