I have a SWG and I'm told that process causes the pH to rise.

The pH will continue to rise if I don't do anything (I don't know how high it will go, but it has hit 8.2. But I don't want to see how high it could get). I use an electronic pH tester/meter. It does a good job when I remember to check the water. I've checked the meter readings against the pH tester in my pool kit I bought from this site and I also dip in a glass of drinking water to double check it, where it then shows 7.0 +/-).

I'll need to check my alk level and report back. I haven't tested a few weeks now.

I noticed that the chrome rings around my pool lights are all corroded now. I hope that adding the intellipH will help me keep the pH levels where they are more neutral (7.2 - 7.4 range) less corrosive to protect my pool heater and spa heater too.