When to start with boric acid

[Edwin45]

Hello, i have fill today my spa with new water, and starting with Dichloor 8 gram til i have (30/40 CYA).

But when is the time to start boric acid.

 

[JoyfulNoise]

You should only add your borates once you've gotten your TA lowered to 50ppm. Adding them before that will make it much harder to lower your TA as the borates will buffer pH changes.