Hello gurus I'm thinkin of buying some corals one of these days so I want to ask everybody's opinion re: calcium additives and such to maintain a healthy and stable water parameters (i.e alkalinity, calcuim phosphate etc.) I am plannning to put a corals that are hardy and would not require/demand rich calcium. I have read jhrnb reviews and all but I wanna know what additives are you guys using coz there's alot out there. Thank you in advanced.