cory seems to have some type of reddish tinge and acting restless. or am I just paranoid

[Byron]

Not to cross-post, but yeah.

I just wanted to come back to this one to thank you bc without your nudge I probably would've put off the substrate change.

Thread 'Dozen neon tetras, down to 9, and counting' https://www.fishforums.net/threads/dozen-neon-tetras-down-to-9-and-counting.478607/

OK, thanks, I'll take a look at that thread. And yes, it is best to keep topics in one thread.

Edit. Colin is helping you, so I will stay out of it, he has more knowledge that I do concerning disease/issues like this. One comment though, do not attempt pH adjustments, this is fraught with problems if it is not done correctly. And it is not the issue here. Won't get into this now, there are more immediate issues for you. Good luck.