I have been having continuous problems with ph levels in my spa. I don't know how I can be able to maintain the ph levels. Once it got too low and the heater stopped, the filter looked clean and I couldn't find any fault, not that I would have had much success. In the end I had to call the repair service and they said low ph caused the calcium deposits in filter and it got clogged.
Now I am having corrosion in the spa due to high ph, that's what the repair guy said. Need help in this regard.