3 Different Species? I don't mean to sound rude if I am, but Bumpy and Gnag are the American bullfroglets. That's their names. I have no other frogs as of now, though I was planning on raising red-legged frogs from tadpoles into froglets and letting them back in the wild, but I honestly did not get what you meant there.

All I have in the tank is Gnag and Bumpy, currently.

I do try to remove them ASAP, but sometimes they get stuck, or they're slightly hidden, which can be frustrating. But I will definitely begin to inspect the tank more thoroughly from now on. I simply don't like to disturb the hoppers. They're skittish, especially Bumpy. If you approach the tank too fast, she'll swim so fast into hiding you'll only see the ripples of water she leaves behind!

As for the filter, the slits on the sides aren't big enough to suck up the crickets, and I've not enough money [currently] to get a new filter. It does keep the water very clean, though, and it deals with the bio-waste well.

I don't use coconut fiber, actually. This is a full smooth gravel setup. That log provides a nice, near-underwater cave for the frogs. They go in there during daytime, and only come out to bask during daytime. Nighttime is a whole different story I turn off the UVB lamp, and turn the incandescent lamp on in the other side of the room, which gives a sundown effect on the tank. That's when I place the crickets in, usually on the water reeds or lilypads, and the frogs go wild, hunting the crickets, croaking [which can get really loud] and swimming around. They usually do most of their hunting during the 'sundown' and when I turn off the incandescent light, they finish the rest of the crickets, and then swim around and croak at the top of their lungs. It's great to hear, as long as you aren't trying to get some sleep.