So, it seems Nino has himself a stubborn case of fin rot. I don't have a lot of experience with fin rot since I'm so strict when it comes to water changes. The cases I have had all responded well to just clean water and stress coat and healed within a week or two since I begin treatment immediately. Nino on the other hand has different plans.
10 gallon divided (4 bettas), gravel, live plants, 78*F, filtered.
Normal water change schedule: 50% water changes twice per week.
Water Perimeters: All zero, tested daily since fin rot was first seen. Tested twice per week normally.
Tank mates (all bettas, separated of course) are all healthy and fin rot free.
I take a ton of pictures so I actually have a timeline for his fin rot. It first occurred literally over night. He lost large chunks but only from his dorsal fin. I then began 50% water changed every other day and added stress coat to his 10 gallon tank. He responded well to that. His dorsal grew back within 5 days... but I noticed red tips on his anal and caudal fins later that day. I continued with the water changes & stress coat but when he started to lose some from his caudal/anal I decided to try a salt treatment which I have never actually used on fin rot before but read about it here (salt, 75% water changes every other day w/ stress coat). His fins look worse today after 6 days of salt treatment then they did before. Maybe he doesn't handle salt well? I have now placed him in a specimen container in his tank, salt, stress coat and 100% water changes daily. He is otherwise healthy and eating a protein high diet of atision's betta pro, frozen blood worms and frozen brine shrimp.
Any suggestions? I know you should not continue salt treatment for more than 10 days. Should I stop now? I don't usually keep halfmoons on gravel, could that be the cause of the fin rot on his caudal/anal fins? Even though it appears to occur mostly along his dorsal line... Or is it possible that he is a fin nipper? I've never had a fin nipper before so I don't know what to look for with that. If nothing else, the timeline might help someone. All suggestions appreciated. Thank you in advance :)
4/22 No Fin Rot though you can see weakening of the dorsal tips where it would later tear off.
4/23 WHAT!!??? Overnight appearance of fin rot--he does not have popeye, I think it is just the angle of the photo....
4/25 After 2 days of increased water changes, stress coat
4/30: Dorsal almost back to normal, red tips on caudal/anal- Began salt treatment
5/1: Red tips gone, looks to be healing...
5/8: Regression after 6 days of salt treatment-moved to specimen container