Reef Central Online Community - View Single Post - Let's talk about Alkalinity, Calcium and Magnesium in an SPS Tank

naka · 08/07/2007, 02:54 PM

I think key to success in SPS tank is keeping your parameters stable. I nearly went through entire Salifert ALK test kit while fine tuning my calcium reactor. Now I only test for ALK/Calcium once a week.

I've had problems when my ALK was above 9 for some reason. I've experienced tip recession and stn on few of my corals. Now I keep my ALK around 7 -8 dkh, but never above 8 dkh.

Calcium is one the easiest to maintain for me. It's never been an issue. I keep mine 420 - 440 ppm stable.

I get really lazy when it comes to MG levels. I check mine once a month. I have some MG granules in my calcium reactor, so I don't add any MG to my tank. It's always around 1500 ppm when I test my water.

Nice thread Joe.

08/07/2007, 02:54 PM	#5
naka Registered Member Join Date: Mar 2002 Location: Houston, TX Posts: 1,544	I think key to success in SPS tank is keeping your parameters stable. I nearly went through entire Salifert ALK test kit while fine tuning my calcium reactor. Now I only test for ALK/Calcium once a week. I've had problems when my ALK was above 9 for some reason. I've experienced tip recession and stn on few of my corals. Now I keep my ALK around 7 -8 dkh, but never above 8 dkh. Calcium is one the easiest to maintain for me. It's never been an issue. I keep mine 420 - 440 ppm stable. I get really lazy when it comes to MG levels. I check mine once a month. I have some MG granules in my calcium reactor, so I don't add any MG to my tank. It's always around 1500 ppm when I test my water. Nice thread Joe.