Reef Central Online Community - View Single Post

Reefiez · 03/21/2018, 08:52 AM

The Red Sea Magnesium pro test kit is a little different.

According to the instructions, the end point is the FIRST time it turns blue. It will turn purple again after a while, but you shouldn't add anymore titrant. I didn't know in the beginning and was "testing" 1500 or 1600 ppm mg.

I swapped to Salifert for MG now, and the end point is instantaneous and unambiguous, so I'm pretty happy with that.

03/21/2018, 08:52 AM	#8
Reefiez Registered Member Join Date: Dec 2016 Location: Hong Kong Posts: 157	The Red Sea Magnesium pro test kit is a little different. According to the instructions, the end point is the FIRST time it turns blue. It will turn purple again after a while, but you shouldn't add anymore titrant. I didn't know in the beginning and was "testing" 1500 or 1600 ppm mg. I swapped to Salifert for MG now, and the end point is instantaneous and unambiguous, so I'm pretty happy with that. __________________ my reef tank is the best skimmer... of my wallet