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Condensate Neutralizer Refill Material?

Javelin Member Posts: 131
edited February 2021 in THE MAIN WALL

Heating Pros, I have a condensate neutralizer hooked up to my boiler system that I installed about 2 years ago. While I didn't take the pH level of the drain water then, I just did today and it came to 3.6, so I'm guessing it's time to replace the neutralizer material. I know I can get a $25+ bag of stone from a plumbing supply place, but as far as I can tell it's just crushed limestone... Does anyone know if I can get a 50lb bag of crushed "something" that will work as a neutralizer for cheaper? I have plenty of room to store it in my basement.. .just figured it might be cheaper? (if it works as well)

Any thoughts would be much appreciated.