Hanna Instruments Marine Calcium Checker Review

I have been servicing my seawater tanks for over 7 years. The accuracy of the test results is very important. I have only used Redsea test kits on my mixed reef. I decided to try the Hanna Calcium Test. The box it comes in is beautiful. Contains 2 vials, 2 syringes, 1 colorimeter, 1 liquid reagent and several packs of powder reagent. I personally didn't like the forward and backward steps of this test. I also found this very contradictory to the results I've read. I've watched many videos of…

It's a Hanna tester for starters, so it couldn't be simpler. Not sure how others like BRS have found it so difficult to get accurate readings from this as I double check the Red Sea kit every time I use it. I'm within 10ppm of the approximate reading which I can check against the dkh and PH readings to see if they seem reasonable and accurate. They do. For example one day I got a reading of 360 and checked the pH and it dropped to 7.83 and the dkh to 7.4. So exactly in line with what I expect…

I have had reef aquariums for 31 years and these Hanna test kits are the best I have ever used. I switched to Hanna from the professional Red Sea models I've had and I will never go back unless Hanna has the kit for what I need. I've used Red Sea, Salifert, API and ELOS and while I have to admire the efficiency of using API kits, the accuracy isn't good enough for serious tanks, but certainly good enough for FOWLR tanks. The other kits in their line require a few more steps, as do all the…

Works as advertised. I've compared this to the API calcium test and it's right in the range. Difficult to compare accurately as the API has a maximum resolution of 20 PPM. I like using Hanna as it shows (within the accuracy of the device) exactly how much calcium is in the tank. Since I use the Balling LIte dosing method in the aquarium, I would like to know how high the calcium level is every few days, which is very convenient for me. I can do the test in about 5 minutes and get an accurate…