Good evening, owner of 6 inch SAL here. Got the little guy in a 20 long right now. My question is in regards to moving him and growth rate. I have a 150 in the den with 7 3 inch silver dollars in it. However its a very odd "tall" variety tank. I'm paranoid about messing the little guys growth up and stunting or slowing his progress but also don't want him to die or struggle in a tank that's too tall for him to get air, or has fish you think may bully him. Should I keep him in the 20 long and if so for,how long? Should I move him to big tank and just get some,floating plants for,him to chill on? Or should I drain the tank to 1/3 depth and move him to big tank so he has the lengthbenefits without the depth struggles? Thanks guys