Test kits

[pratt]

Because of reviews I have purchased the Hanna alkalinity tester. My first test indicated that my alk was at 6.7 dkh. I found that to be off because I have always used Red Sea Alk and when tested with Red Sea it shows 7.8 dkh. Can the difference be that big between the two. If so how can I know which is correct?

 

[CoralNerd]

Because of reviews I have purchased the Hanna alkalinity tester. My first test indicated that my alk was at 6.7 dkh. I found that to be off because I have always used Red Sea Alk and when tested with Red Sea it shows 7.8 dkh. Can the difference be that big between the two. If so how can I know which is correct?

Heck you should get a Salifert it's my favorite. Quick and easy.

 

[dealseer]

When you test your standard, which test is closest?