Hey your new boy is very beautiful! Sorry i just saw your tread that you ask about disinfection. Do you still need instructions on that. Just don't put your new boy in that tank without disinfection. Let me know if you need it and i will post disinfection instructions in your thread:) Good luck with new boy!
And also do you need any tips on water changes ? Not sure if you trying to cycle the tank or just doing regular water changes.
Hey sorry about your betta with dropsy how he doing? Make sure you don't cross -contaminate anything with your other bettas . I would always actually recommend to use separate changeing equipment for every betta that you have. Do you need any hints on water changes for your other bettas?