Thats so crazy. Hope most of them stay alive. I used to have a 55 that had convicts in it. Well the convictswould dig all the way down to the UG filter. The eggs would fall down there, and they grew to almost an inch before we pulled them up.
I once bought a second hand canister filter from some guy and when i got it home and started it up it spat out a 2" BGK into the aquarium i still have him now only hes 13"!