so it's been a while before i set up a tank from scratch..
got a kind of stupid question here... i think i've remembered it right, but just wanted to double check..
when mixing saltwater in a new tank, do it without the substrate in, correct? Also, does it matter if rock is in the tank? I assume not.. after all it's just base rock... but i remember hearing that if you mix new saltwater in a new tank with substrate already down it can clump up and almost become cement like?