My family and I went to a pool party today for my son's soccer team. The home owner was complaining about how he just replaced his DE filter with a sand filter because the pressure would max out after a day or two and need back washed and recharged. My thought was latent algae but the filter was already changed and he was happy with it.
So then we started talking about the water chemistry. His neighbor happens to work at the local pool store and they test his water for him. He says they use some sort of big machine that makes a lot of noise.
I told him about drop based testing and offered to test it for him.
TA: 600+ (stopped at 60 drops, still not fully pink)
CH: not tested
15,000 gal vinyl
I told him his FC was too low and we added a jug of 8.25% bleach.
So after retesting TA, I asked if he added a ton of baking soda or TA up? He said the pool store indeed tells him to add 20lbs of TA up on a regular basis! He also said they've been selling him pH up but the pH isn't moving.
I've never seen a TA this high. It was hard to even test because the solution was so very gradually changing color with each drop. I'm torn between taking advantage of the low pH to start the aeration process or just telling him to get his pH in range and worry about the TA later.
So how much aeration is he going to need to get the pH closer to 7.5 with a TA that is so high?
Sent from my iPad using Tapatalk
This was supposed to be in Testing and Balancing, I have no idea why Tapatalk put it here. Please move. Thanks.
Moved as requested. Zea3