Alkalinity test kit

[Oshengems]

I switched to Elos, it’s just very simple, I like it better than my salifert since it’s only one bottle drip into your vial until color from blue to yellow very subtle and even color blind like me see it clearly the change that simple ...

 

[Duffer]

Hanna all the way for me...love it

 

[Randy Holmes-Farley Verified Community Expert]

If you have issues with color endpoints, you can use a pH meter, which will be easier to read than a color change. Run the ph down to about 4.2-4.5 (it moves very fast in this range with each drop added). You can also buy a standard acid, and forget kits entirely.

A DIY Alkalinity Test: By Randy Holmes-Farley - REEFEDITION
http://www.reefedition.com/a-diy-alkalinity-test-by-randy-holmes-farley/