chem geek said:Just see how the pH is holding. If it is dropping over time, then increase the TA. If it's stable, just leave it as is. If it's rising over time, also leave it but consider using 50 ppm Borates if you aren't doing so already.
chem geek said:Sure, if your pH was still stable at a TA of 80 ppm you can raise your TA. The key to the TA level is to not get it so high as to cause the pH to rise.
GuinnessPhish said:chem geek said:Sure, if your pH was still stable at a TA of 80 ppm you can raise your TA. The key to the TA level is to not get it so high as to cause the pH to rise.
TA is 60 now, CH 200.
My pH seems to keep drifting upwards, requiring me to add muriatic acid every few days. I just added enough acid to bring pH down to 7.2.
Is there anything I can do to make the pH remain more stable?
UnderWaterVanya said:50ppm Borates as Richard mentioned before. Borates add more "pH Inertia" helping hold the pH more steady.
I didn't notice this question before (and the user may no longer be around), but you don't need to use stain and scale control or any other metal sequestrant unless you've got a metals (usually iron from well water) problem. Also, your hot tub need not get to CSI balance since it's usually acrylic and it's better to have a somewhat negative CSI to ensure you don't get scaling in your heater even if the pH gets too high.yog27 said:If my hot tub is balance (CSI =0), do i need to had weekly stuff like "Stain and Scale Control "?