So I want to remove the fine semi-deep sand bed in my 125gal reef tank. I want to replace it with coarser sand. I thought about going BB but i have a couple pistol shrimps and some beautiful starfish. My question is, what is the easiest way to remove the sand without releasing too much ammonia? Using a shop vac? Also, I read that i should use dry sand now that i am replacing my current live sand. Is this true? And where would i buy Dry Sand here locally?