Question about alkalinity?

[cjs_96]

I purchased a Hagen KH test kit and it states my carbonate hardness levels should be between 105 - 125 ppm (2.1 - 2.5 meq/L). I have a book here that states my carbonate hardness levels should not be below 150 ppm (3.0 meq/L).
Which is correct in ya'lls best opinion? :notsure:

 

[reefnut]

You need to keep it between 150 to 200 ppm. Hopefully someone that also uses the Hagen kit will chime in and help.

 

[cjs_96]

Thanks for that info Reefnut. What brand test do you use?

 

[reefnut]

Salifert... they sell them here for a good price... you may consider them next time you need kits!