Originally Posted by
ReefNut
It's not automatic by any means but if your alk is 2.5meq/l then you should shoot for a calcium of around 410ppm (I keep mine around 3.0/420 to 3.5/430). I say "around" because you can drive yourself nuts chasing numbers and there is no reason to... just get them close. Kalk will provide a balanced solution of both alk & calcium so after you get the numbers where you want them then use the kalk to maintain it... adjusting when needed. I use a ca reactor on my 55g now but used kalk for years... good stuff.
https://www.saltwaterfish.com/vb/showthread.php?t=86674
My tank has been up and running for over a month now, have my clean up crew and will be adding my perc clowns next week (currently in QT). I am in the process of ordering some things to help with my alkalinity and calcium. Right now my alk is a at 1.7 and calcium is at 300 or 350 (if I did the test right
). My pH is 8.2. (After those tests I did a 5 gallon water change, so will test again before adding anything.) I've been told to get the Kent Marine SuperBuffer-dKH but what calcium additive should I get? I was thinking the Kent Marine Liquid Calcium. Oh, my tank is 125 gallons, 160 lbs live rock, 100 live sand. I have some great purple coraline that I'd like to keep if at all possible. Thanks for the help!