First post, have been stalking the site since January and have done a lot of reading about how to set up the pool weather to bury or not, pool chemistry and pool school etc. Things have been a bit shaky but I got them cleared up and pool has looked great for over a month, crystal clear and very nice..... started to get a big head and maybe even a little bragging.......... and now my pool is starting to do what my saltwater fish tank did.... turn green.... I never did master the tank so it had to go, I have way too much time invested in this pool to have this project turn out the same!
Monday evening I noticed really dark green areas in the corners under the skimmer area thought it was dirt and was going to vacuum the pool but since I was already in the pool I decided to grab some kids goggles and take a closer look found what looked like mold that wiped off easy. I figured it to be algae so we cut our swim time short and started testing and treating. I brought chlorine levels up to 5 that night and brushed the entire pool the next morning they were around 2 or 3 so I added more than normal to keep levels high for the day, tested that night and they were at 2 again not wanting to over do it i left it till the next morning when I normally test and treat, it was at 1 so I added an extra cup of bleach and checked when i got home it was at 1 again so i left it and today I put in two extra cups of bleach. I just found the algae has returned in the same spot and tested levels and found chlorine at 1.....
here are the levels that I have now I cant test everything with my test kit so some of this was from pool store about 5 weeks ago
FC - 1
TC - 1 this doesnt ever seem to change or maybe I dont know how to test for it
PH - 7.5 this has been pretty steady since adding the Borax
TA - 90
CH - ? not sure the pool store tested this
CYA - 50 tested 5 weeks ago
My other issue is my test results seems to be shaky at best, some days I cant tell the difference between one shade or the other and now I have two cheap kits here and they seem to have different results.
I have already added 4 cups of bleach tonight have the filter running now and will leave it on over night for circulation. My normal run time for the filter is on at 6am off at noon.
I am using 8.25% clorox for the past two weeks, started with 10% stuff from Home depot
I added Borax according to the calculator about 4 weeks ago