I am having trouble reducing TA and lowering pH, despite following the procedures described on this site.
Spa is 290 gallons.
CH is 300, TA is at 110 and pH is at 8.2 despite adding a lot of acid.
I'm using the aeration/acid approach, and TA started at 220, so it's making progress, but is it normal to use 5/6ths of a bottle of acid (so far) for such a small amount of water?
The only chemicals in the water so far are a bit of dichlor, enough borax to get to 50 ppm, and a ton of acid.
The water looks, feels, and smells great, but the acid consumption seems really high.