In fairness to all, we don't discuss pricing on the Wall. Thanks for your cooperation.
Working in California, we have never had to use glycol on any of our systems, but a customer has asked me to take care of his solar system; monitor the pH and replace the glycol as necessary.
I haven't the foggiest idea how to do this. Any suggestions, youtube videos or products recommendations are welcome.
Come to think of it, I don't see it discussed here on The Wall very often. Is it that simple?
Often wrong, never in doubt.