Hi, I was wondering what kind of tank shape octos(bimac) like the most? Do they like any dimensions larger than others? I like how cubes look but am thinking the dimensions might not be what an octo would like most. Also, does anyone use macro algae in their main tank without it getting out of control? Just LR looks sort of bland and I hear corals and octos don't mix too well. I just want some sort of color in the tank and WILL NOT put in fake plants or anything, I just hate how they look.