Im trying to gather as much information possible on umbee before I get a few at about 2"s. I have a 150g that they'll live in for the first year or two then hopefully I have two paired up and ill move them to a 210 or 240. Im wondering how i should aqua scape this 150g. Should I go with rock or sand substrate. I heard umbee require very clean water, and once a week water changes. I wanted to go with sand, but if the umbee clean clean water and many water changes im thinking rock would be easier to maintain. MFK help me out this setup is going up as soon as I figure out the setup.