Long time listener, first time caller...
I recently opened our pool in Northern California. It was neglected over the winter, so it was quite green -- like pea soup. I scraped the bottom, and pulled up gunk, mud, you name it. I read all I could about test kits ( I bought a Taylor test kit, don't remember the model, chemistry, etc. in Pool School, and got started. First, the stats as opened...
Sorry, I will add these to my signature shortly...
18,000 inground, plaster pool. Hayward C-1750 cartridge filter
1+ hp pump
solar panels (currently off-line)
FC = 0
PH = off the charts high
CYA didn't know yet, water way to murky
TA = 100 or so
After scraping and brushing until I saw no color carnage when the brush or net came close to the surface, I started adding chemicals -- namely, 6 or 7 gallons of liquid chlorine (10% strength, 2 packs from Home Depot. I bought the freshest I could fin, which were manufactured a few weeks ago). I also started adding acid, to get the PH down to acceptable range. Along the way, I checked CYA, and it read 40. The water went from pea green to a light green/grey.
I read about the benefits of dichlor and tricolor as shock, and put about 5 pounds in two days ago, along with two more gallons of liquid chlorine. As of yesterday, I was surprised that the FC had dropped dramatically, down to about 4. Meanwhile, the CC seems to be quite high, at around 30 or so at this point. Also alarming is the jump in CYA -- to about 90.
I read a post on TFP from another user with similar issues, and the advice seemed to be to continue to add chlorine, but in liquid form, as to not further add to the CYA. Using the Pool calculator, I found that at this level of CYA I would need to add 5+ gallons of bleach to shock the pool towards killing the remaining algae.
It has been very warm and sunny here in NorCal. Am I close to being on the right track? We have an 8 year old, and he really wants to swim before school starts again
I had gone to the pool supply store in past years, and while they were nice, their approach was so cautious that I ended up never getting the pool clear all summer. This year I am trying to figure this out with the help of resources like TFP. Any help will be greatly appreciated!