the only thing about it that i see is a problem is that if you hand feed you'r fish then they associate you'r hand with food. So say you'r cleaning the tank they will occasionly bite at you'r hand. Personal exsperience i had a jardi that i grew from 3 inches to 18 and he used to swim up against my hands when they were in the tank and right around them brushing them all the time. But then i started hand feeding him and after that when i put my hands in the tank he associated them with food and would nip at me you know what i mean. So it's something to think about before you start doing a jar doesn't have teeth so no big deel but other fish do you know so think carefully i would advice not to do it but that's just my opion either way good luck