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

JB NY · 08/10/2007, 09:59 AM

I test once a month. In the beginning I tested more often but for the last few years of the tank I only tested once a month. If something was really off I might test it 48 hours later to see if things got back on track.

I dose ca/alk through a ca reactor and kalk reactor so that is done all the time. The Ca reactor is on 24/7 and all top off water goes through the kalk reactor. Mg is only added to water change water. I do that once a week.

08/10/2007, 09:59 AM	#59
JB NY Registered Member Join Date: Mar 2001 Location: Long Island, NY Posts: 9,207	I test once a month. In the beginning I tested more often but for the last few years of the tank I only tested once a month. If something was really off I might test it 48 hours later to see if things got back on track. I dose ca/alk through a ca reactor and kalk reactor so that is done all the time. The Ca reactor is on 24/7 and all top off water goes through the kalk reactor. Mg is only added to water change water. I do that once a week. __________________ -Joe TOTM Sept 2002 \| Reefland April 2004 \| CORAL Magazine Nov 2007 Featured Tank "Coral Reef Aquarium" 2011 \| Reef Spotlight 2018 Current Tank Info: 270G SPS Tank, 140G sumps, 35G Frag Tank, Ultra Reef Akula UKS-200 Skimmer, Apex, Giesemann Spectra 3x250W MH 4x80W T5, 2xReefbrite Tech 72" Blue LED, Triton Dosing, ARID C30 Algae Reactor, Maxspect Gyre