Just curious if anyone has ever noticed an increase in their tanks ph after adding cichlid stones? Just to be clear I'm referring to the hollow ceramic ones that can be purchased. I've got nothing left in my tank but PFS and cichlid stones for decor and my tanks ph is consistently testing higher than my tap water. I'm thinking it must be the stones buffering the water somehow but thought it best to ask. My tap has a steady ph of 7.6 and I'd love to get my tank to match that so I could do large water changes without stressing my fish but before I do a water change my tanks ph is up to 8.2-8.4?