Ok so heres the deal I am getting a new tank sorry for the repetivness of this statement lol. i am wondering about sand. So I was planning on doing black sand but its magnetic so maybe not. Then I might do white sand I need it heavy enough not to blow around by gyres any suggestions. Or my other option is bare bottom. thoughts what do you prefer for a reef tank of sps and lps. I want to keep wrasses and firefish I know that will be a problem right?