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Unread 03/22/2018, 08:29 PM   #11
RCS82
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Join Date: Feb 2016
Location: Sherwood Park, AB, Canada
Posts: 273
Quote:
Originally Posted by homer1475 View Post
When I see red to blue I stop. Salifert ALK kit gives the same exact number as a hanna. If I continued to add until it stopped turning back My alk would be off the scale.

Directions do not say to keep adding until the color stops(even though this is non typical for titration kits). The directions say to stop as soon as the color change is noticed.
I get the same results with Hanna and Salifert as well. I did 2 tests with the Hanna checker yesterday, one with old reagent and one with brand new reagent, and they were 7.5 and 7.8. Can't remember which one was which but they were close. Did the Salifert test and saw the color change was at 7.7 I think, and that's close enough for me. Sometimes I will add another drop just to see if the color change will continue but it doesn't really.


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After about a 16 year break from fish keeping,
Wow, how things have changed.

Current Tank Info: 90g, mixed reef, I hope haha
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