We are in our 5th season with our pool. In a moment of weakness I allowed myself to be talked into Baquacil last year. We had algea problems in the first year so I decided to go back to chlorine this year. The folks at my pool store were not happy with my decision and weren't very helpful about converting. Thanks to all of you I finally figured out how to go about it!
The conversion seems to be complete. The pool store test said there was no Baquacil left in the water. We changed the sand in the filter. But I still cannot maintain FC over time. The level is high in the early am but by noon it is 0. The water is hazy. You can easily see the bottom but it isn't crystal clear either.
My current numbers are:
Total hardness: 275
They also tested for phosphates which were negligible but they still had me add a bottle of PhosFree. Then they had me put in 6 bags of shock. The next morning the FC was 10 at 7 am. By 11:30 am it was 0. I took another sample in and they ran a chlorine demand test. They said I needed to add 5 bags of TurboShock. I didn't have TurboShock on hand so added 8 bags of hth Super shock n swim (52% hypochorite). Again the FC level was 10 in the early am but 0 by noon. Last night I put in 10 bags of Super shock n swim. This morning the FC level was somewhere beyond 10 (my test doesn't register that high) at 8:30 and 0 by 12:30.
From some of the posts I've read it sounds like I should be shocking more often. I thought I had to wait until evening.
My kids are frustrated because they can't swim. My husband is frustrated at the $$$ we've been throwing in the pool. I have no confidence in the folks at my pool store whom I've trusted the last 4 years so I'm just plain frustrated. Please help!