HI! i just got my user name instead of being here as a guest. my "guest name" was 10yroldguest, and i can prove it; i've got 3 crabs, shelby, an inactive one, is currently going thru postmolt and i have 2 others in the main tank: dribble and hushie. anyways, my problem.... see, i think i have plenty room so i'm getting a 4th crab. but not just buying one. i'm going to find a horrible petstore, find the saddest looking crab, buy it, and then save its life. the thing is my only ISO that has any substrate is a teeny-weeny little tank that's already occupied. by my post-molter. i was wondering if it's ok NOT to isolate new crabs. my 3rd crab was bought seprate from the other 2, and i just placed him in the main tank. he acclimated well. so should i isolate the new one (which i already plan to call Ace) or what??