First post- other forums won't answer

[cfclay]

There is a link to the filter on my message, it is Model 1900 — Item No. 0-1702-019 and holds 225 lbs.

[PoolDoc]

Sounds like your filter is 'channeled' or has grooves in the sand that allow the water to bypass most of the sand. Also sounds like your sand if fouled.

Do this:

1. Being dosing with 1/2 gallon of PLAIN 8% bleach added manual EACH evening. You can do this while the pump is NOT running.

2. Remove all the sand from filter, and carefully inspect your filter parts, comparing them to the manual. Replace what's needed.

3. Refill with new clean filter sand.

4. Try again.

The bleach will 'keep' your pool, while you're working on the filter.

[CarlD]

In the sand filter when you look at the parts, look for cracks and breaks, It should look like an upside umbrella, a little.

[cfclay]

When I took it apart today- I saw sand in the "deck", but I never saw
Sand in the pool. Take a look at pictures... It was definitely pool sand from a pool store. I ordered an o ring for it- after that, I'm not sure what direction to go.