Hey everyone new member here!
I recently bought a house, and while I wasn't looking for a pool, it came with. The fiancee... now wife also had some say in wanting the pool as well
Anyways, as far as I can tell it was most likely installed back near 1997 and is a Shasta PebbleTec pool with a Shasta TR100 sand filter on it. The pump specs are worn off, but from the lack of controls and standard metal intermatic timer, I have to believe its a single speed. There is an oxidizer, but I've read their worthless and so I left it shutoff like the previous owner left it. I'm near Phoenix AZ and I get sun 365 days a year and our water has high calcium. The previous owner was a pool store devotee by the trichlor puck and phosphate remover cans left behind. I just got my TF100 test kit and the results are below. All tests were done twice to eliminate rookie mistakes.
FC - 1-2
CC - 0
TC - 2
pH - 7.5
TA - 120-130
CH - 325
CYA - 0
Pool Water Taken 2 foot below surface ~70 degrees
Ambient Air 80 degrees (tests performed inside at 78 degrees, water did have a short time to warm)
FC - 0
CC - 0
TC - 0
pH - 8.0
TA - 160-170
CH - 750
CYA - 100+ (did the dilution and estimated around 150-160, tested outside with sun shining to back, and tested at different times)
So, the main question I have is should I drain and refill. The pool calculator estimates to fix CYA 60% of water and for Calcium 100% needs to be drained.
I've backflushed the filter 3 times this month and no change in CYA. I just got a hold of the instructions for the filter and I need to extend the backflush time so that may help (was at 2min should be 3-6 min). I believe its really a 9400 gallon pool, but I am going worst case with rectangle at 10K.
I apologize for the FC numbers, I know there is some algae coming, and I am prepared (with liquid CL) to SLAM at FC 45, but I just wanted to see if I should drain first.
Thanks for all your help in advance!