Thinking of setting up my first salt tank

[SeaHorse_Fanatic]

White aragonite sand helps buffer the water & add calcium to the system as it slowly dissolves. The black "Taihitian" sand (I think its called) may or may not add calcium to the same degree. You'd have to check that out.

Of course, there are a lot of reefers now who swear by the bare bottom method.

Anthony