Bob, im not crazy about the crushed shells. Fish sifting through the substrate may injure themselves on the sharp edges. Hopefully theyll learn not to sift it but its their instinct to do so. good luck bud.
I hear you. I ran it past Dave of Dave's Rare Fish and he thought it would be OK. I believe this front is gonna love his bigger apartment!
Any way to tell sex at this size? he is about 5"