Hey Guys and Gals,
I Have a 16x 32 pool.
The skimmer has two holes on the bottom with a plate and an adjustable flap that covers one of the holes (closest to pool).
I have a hunch that the bottom drain is not functioning properly.
I have been battling with an green deep end for quite some time.
I have shocked the pool, changed the sand in the sand in the filter and vacuum it daily (including vacuuming to waste)
The pool goes clear after the shock but within a day or two green deep end and clear shallow end.
All tests from pool shop have come back great.
I am convinced that the main drain isn't draining and circulating the water properly.
The pump system is simple --- one line in and one line out : )