I got a dozen in a 10 gallon, its awesome when the lights ping on, they go bonkers and smash into the glass and wriggle like mad. I cant help but stand there turning the light on and off dozens of times. Disco disco disco disco
depends on the floor area they have, if its height your tank has, it would be a pants idea. Mine wont be in there forever so not perma home, they are ickle![]()