I have been reading lots of helpful posts on this forum and can't say enough how grateful I am for this place! My husband, children, and I moved to our new home a few months ago. We have a 30,000 gallon (18x36) inground pool with a vinyl liner. It has a sand filter and an auto cover. It was covered all winter and besides a few bugs and leaves, the water looked good when the pool store opened it 3 weeks ago.
We swam Monday afternoon and when we opened the cover yesterday, the water was really cloudy. My husband had added 4lbs of stabilizer (conditioner) on Tuesday since our CYA was 0. Today, the test with the TF-100 kit are this:
We began the shocking process at 11AM by adding 4 128oz jugs of bleach, ala the pool calculator trying to bring the FC up to 12. We also brushed the pool. I checked the FC an hour later and it was 4. I added the last two jugs of bleach I have and just got back from the store with more.
How soon after adding bleach can I test the FC level to make sure it's at shock level?
Should we leave the cover on or off during shocking?
How often should we brush?
Backwash? (The PSI is at 20 now.)
We are planning a pool party in two days and this is so stinking stressful! I am a SAHM so I am able to test and add things as needed.