sterilize

So I have been in the hobby for over 15 years. Battled ICH 2 times throughout my life when I first started and cleared it succesfully. Now my fish room has expanded to about 5 tanks all large, but I have not gotten new equipment. 1 of my tanks came down with ICH. Current inhabitants (2 indo...

Was looking at getting metronidazole and flubendazole to treat my gulpers that come in next week as that's what discus origin recommends, I want to sterilize my tank before they get here since my last ones died so I did a bit of research on bleaching and using hydrogen poroxide and saw someone...