My father-in-law just bought a house a few days ago with a pool. The pool is from 2003 or 2007 - I'm not sure; I'd lean towards 2003. It's an in ground vinyl with concrete decking roughly 16x32 and around 3' on the shallow end and 5.75' on the deep end for about 18,000 gallons I think.
In any case, the former ownership was a trust and they were not dilligent about the pool. It was reopened for inspection about 10 weeks ago. They didn't start maintaining it until we complained and then they had a pool service keep it going. The service did not use pucks that I know of. The pool when they turned it over was full of a minor green algae bloom on the walls and floor but the water was mostly clear. I brushed it and dumped in about 14 oz of Algaecide (Aquachem 50% for Green Algae) the first day (this past Thursday.) I then added 2 Triclor pucks to the autochlorinator (not knowing any better) and assumed all would be good. Then I found this site and started reading. Friday I had no green in the pool but it was a bit cloudy - I backwashed a couple of times and kept filtering. I went to the Hardware store and got my water read: FC: 1.7, TC: 1.6 (???), CC (0), PH: 7.7, Hardness: 340ppm, TA: 0 (!), Copper 0.03, Iron 0; So after reading the CYA/FC chart I got some 6% bleach and based added about 50oz of it to the pool to see what happened. I also dumped in 8 lbs of TA booster later that day and and I ordered the TF100 (which arrived Today since I'm in NC also!). Then I read the site some more... . Today I had them test the water again - it was a mess of a testing session with multiple runs and different results. The key items being TC: 2.2-2.3, CC (0), PH:7.4, TA (20-40), CYA: 40. Based on CYA/FC I boosted this with another 65-70oz of 6% bleach mid-day (yes I know that isn't the best time) and kept the kids out for an hour or so. Then tonight when we left for dinner I dumped another 8lbs-10lbs of TA Booster into the pool and brushed the deep end to ensure it was well mixed.
I came home only to find my TF100 had arrived! Yippie!!!
Tonight I measured and got the following results using the full FAS-DPD/etc.
TA: 170ppm (Ouch! Wish I knew this before blinding dumping in the TA booster!)
CH: 350-360ppm (not quite sure based on color change)
Based on the CC value of 0.5 I assumed I needed to Shock and I also wanted CYA around 35. So having purchased a box of Dichlor based shock already before finding the site I dumped in Two bags in the deep end and set the pump to run all night tonight. Tomorrow I'll try to get a FC reading early in the morning but I may fail to get up early as tired as I am.
The water is clear'ish and a little cloudy. The main drain is slightly obscured but all the shallow is easily seen and I can see the bottom everywhere but it's a little cloudy - not crystal clear.
Tomorrow no one is going to use the pool (Everyone is tired and worn out anyway...).
So am I crazy or am I on track? I know that to bring down the CH I'm going to have to lose some water and add some fill - with Vinyl liner and Concrete decking can I hold off on that and let the evaporation and replenishment help? I'm in the Charlotte NC area it's HOT and humid here. The pool gets a good 8 hours of sunlight if not more a day.
Oh one more thing. I brushed it when I algaecided it and I brushed it today. I have no vacuum hose yet - that's on the todo for tomorrow. My plan is to try to use Bleach as my primary Chlorine and use pucks and/or shock if I need the CYA but otherwise not. I'm not above using a few pool chems but I am going to test and understand what impact before blinding treating symptoms. I want crystal clear water - but I also don't live there. It's a 5 min drive to the house so I can probably take care of it most of the time without issue - pucks for when I am out of town?
Lots of stuff in this first post - please be kind.