I am putting the baffles in my 40B sump for my 45G frag tank that is going up tonight. I am unsure what I want to do. This will be mostly SPS with BB in the frag tank (I have 15 lbs. rock in there). I am wondering if I should do a remote sand bed in the sump? I think I remember hearing somewhere that sand has certain buffering capabilities that BB folks have to work around as far as dosing and keeping stable params. Is this true?


