Only my newest bottles have not rubbed off the expiration dates. 8/2023. So that singles out that. Ugh.A new test kit (and disposing of the old bottles) would be a way to test the hypothesis. That said, don't the bottles have itty bitty print with an expiration date? I know my current bottles are good until 2021.
I was actually able to get some much better pics, and yes!! It is tough, especially with the fast little guys to get any kind of quality pics. I started the Melafix on Monday. I did just do a 25% WC and added AC before I had a chance to get on here to read your comment.When did you start with the Melafix? It does not work very fast. When they are acting and eating fine I wouldn't be concerned right now, wait another couple of days see how they are doing. Good pictures by the way, I know it is hard to do without professional equipment.