Fritz Blue Box Salt PH

[awashburn82]

So I recently switched from Red Sea Pro salt to Fritz Blue Box salt. I have a 75gal tank and do weekly 10gal water changes, admittedly I have been slacking on my water testing and recently noticed many of my hammer corals contracting and not looking well. I decided to do an alk test and noticed my alk has fall to around 7.6 from 9.5 when i used red sea. I also hadnt been dosing as with red sea I never needed to. Ive started dosing again and am slowing getting my alk back up. But with that said I decided to test my salt mix before putting it in the tank and noticed the alk to be 6.7dkh. Has anyone else noticed Fritz blue box to have this low of alk?

thanks

 

[sarcophytonIndy]

Might be time to try another test kit. My Fritz blue box mixes up at 8.5

 

[dkeller22]

For the last few months Fritz blue box has been mixing to 7.6ish Dkh for me. I'm switching to something else.

 

[Uncle99]

Nope, mine mixes to a PH of 8.4.
23 cases over 3 years.

 

[Randy Holmes-Farley Verified Community Expert]

Title says pH and text says alk.

Which are we discussing?

 

[reefingaz]

I went from red box to blue and they are rock steady 8.5 alk and 8.3ph when mixing. I love it for the $$$

 

[dkeller22]

Probably both. My PH won’t go over 8.0 and my ALK is below advertised when the salt is mixed. Several people at my LFS have the same results so maybe Canada is getting better stuff than the US is, but our results in my area are terrible. I’m using Hanna checkers for ALK and I have three PH sources that give the same results.

 

[Randy Holmes-Farley Verified Community Expert]

pH is not really an attribute of the salt mix. It is determined by the alk and the CO2 in the air you mix it in.