Let me see if I got this right after briefly scanning this thread:
Tank ph is 7.6
Tap ph is 8.8
Temp is matched during water changes
Symptoms only occur during and a few days after water changes.
Have you tested kh? It seems like the ph in your tap is high, raising the ph in your tank. Then ph drops possibly due to lack of buffering. Then you do another water change and the tank never settles. Correct me if I'm wrong on the tank parameters. Thanks for tagging me Frank.
Tank ph is 7.6
Tap ph is 8.8
Temp is matched during water changes
Symptoms only occur during and a few days after water changes.
Have you tested kh? It seems like the ph in your tap is high, raising the ph in your tank. Then ph drops possibly due to lack of buffering. Then you do another water change and the tank never settles. Correct me if I'm wrong on the tank parameters. Thanks for tagging me Frank.