Ok, i think i've finally managed to stabilize my 5 gallon hex enough to support some inverts. The only thing in it now are two juvie guppies and one thriving RCS. I wanna get some more rcs and some ramshorns. But i was just wondering if i could keep one or two briggs in there too? I'm guessing prob. just one but just wanted to be sure. I have an Aquaclear 10-20 on it as a filter. And it is an eclipse tank that i cut the plastic so the filter would fit snug. So it is completely enclosed except for maybe a 1/4" around where the filter return is. Thanks.