Which Hanna Checker should I get?

[Jubal_Harshaw]

My have a LPS and Softies Reef tank. Running for 7 months now. Which ALK Hanna Checker should I get HI772 (DKH) or HI775 (ppm)? Do I need it for the type of my tank?

 

[MnFish1]

My have a LPS and Softies Reef tank. Running for 7 months now. Which ALK Hanna Checker should I get HI772 (DKH) or HI775 (ppm)? Do I need it for the type of my tank?

This is going to sound like heresy - but No- you don't need one. BUT - part of the answer depends on - are you dosing alkalinity, doing water changes, size of the tank, etc.

I personally do not like the Hanna checker - for a variety of reasons. I do not want to get into the debate about which manual test is best - but I personally use API - and have had no problems. Hope this helps - sure there will be other answers.

To answer your other specific question - I would get the DKH version if you're going with Hanna

 

[PatW]

I do like the Hanna checker and I use the DKH (because that is how other ALK tests are set up). The Hanna checker really looks great. But they do have a problem. Each batch of reagent seems a bit different than any other batch so each time I use a new reagent bottle, it is ”how big and which way is this shift?”. Also, even though it is digital and non subjective, end point titration tests like Salifert and Red Sea Pro seem to be every bit as reproducible. Now Hanna has an implied DKH of plus or minus .1, Red Sea .2 and Salifert .3 but in my use, they all seem to vary by about the same amount. Also, for some reason, the people at Red Sea and Salifert seem to be able to make consistent reagents that do not change from batch to batch (well usually). If you get Hanna, I would suggest getting Salifert (it is cheap) and reliable and a good back up.

 

[AydenLincoln]

I’d get the dKH that’s what I have and like unless you want to do the conversions or know what range it should be with a ppm!

 

[Tiki_Reef]

DKH is the universal language as far as ALK goes for the most part in this hobby and definitely the one you would want to get if you decide to buy one.