I recently got some green spotted puffers and have them in a 5 gallon for now. since they are only 1/2 - 3/4". I want to get more puffers and put them in my 60 gallon, but the problem is that I have a 2' snowflake eel and a 1' zig zag eel in there. my concern is for the eels, I have been told the little puffers can be pretty mean when they get larger. anyone have suggestions? thanks