I purchased an older GEO 624 CA reactor from a member a while ago and am just starting to get it up and running. The lid does not have a PH port. Is it possible to drill the lid and install one? Anyone have any tips or tricks?
Just drill and tap it yourself....super easy. Harbor Freight has the kits for under $20. Then buy the fitting that holds the PH probe, I forgot what that's called.
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