Hi here is the story I had a pool guy for about a year or so and within the past couple of months i started to get leaks in the copper pipes that are connected to the filter, I also had some discoloration on the walls of the pool. The pool is roughly 40,000 gallons uses DE filters and has a fiberglass liner. I felt the pool guy wasnt doing his job so i bought a test kit at walmart and checked the water the clhorine was ok but ph was too low to get a reading using the test kit I went to a pool store and bought 10 lbs of ph-up and put it all in the pool the water turned a cloudy blue but after a day the cloudyness went away and I took another test the ph was still yellow but got a few shades lighter still too low to register on the tester. I took a sample in to the pool store and here are the results
FAC 2 ppm
TAC 2 ppm
CH 420 ppm
CYA 100 ppm
TA 60 ppm
pH 7
BASE 45
COPPER 5 ppm
IRON 3 ppm
TDS 700
PHO 500 ppm
he sold me two 1 liter bottles of metal free and said to dump them in the pool and wait a week then bring in another water sample he also said i would need about 60 lbs of soda ash to get the ph up to the correct levels but not to add anything to the pool until the metal issue is resolved.
can anyone give some reccomendations to get the water back to par? is there a cheaper alternative to soda ash from the pool store? I was reading about baking soda wash is that just as good?
incase you cant tell already, im fairly new at all this and dont want to get taken advantage of at the pool store as it gets quite expensive. any help is appreciated
also i noticed a couple cracks in the fiberglass liner could this have been caused by the low pH and is there any way to repair them without draining the pool? i have one very close by the main drain and 40,000 gallons of water is also a little expensive.
Thanks for your help
Adam