My betta fish died and I really don't know why. I took the whole tank apart and soaked all the decor in hot water. Now they are drying off. I don't plan on using them for awhile so I'm just gonna store it all in a trash bag until I start up a new betta tank. Is there anything else I should do so that when I use them again my new fish won't be at risk of getting anything my previous fish had?