I did wonder if it was an irritation. Keep the water changes up and I expect it will heal. I have been on this forum many years and do not recal seeing it.
Damn. You got me. He likes them so much!This is why you don't feed your ray peanuts.
I have not seen that before. I wish Aquaman45 was still posting on here as he would know, try looking him up on Facebook (Richard Hardwick)
It did seem to get a bit bigger from when I first noticed it but it doesn't seem as swollen. It's almost seemed like it's calmed down on the inside of the wound and the edges are only slightly raised.I haven’t seen anything like that either. My guess would’ve been heater burn as well until you said it was covered. Getting any better?
I've cut down a bit on water changes. I had wondered that as well though. Thinking the biofiltration had needed to do a bit of catching up. Anyway, things are looking better now.Maybe your tank isn't fully cycled if it still has ammonia readings. Plus you're changing your water way too much. 75% on a weds then another 25 on Friday and Sunday seems excessive.