seems to work By brad on 11/6/2012
brad would recommend this product to a friend
i am happy with this checker went step by step and tested my water and showed 533ppm
Super easy By Rob on 10/3/2012
Rob would recommend this product to a friend
Out of all the test I like this because u don't have to count drop by drop, super easy
Accurate if use good water By Edward on 9/28/2012
Edward would recommend this product to a friend
So I knocked off a star because this should come with its own DI water (or BRS should sell the Hanna water). If you use the lab grade water, this thing is very accurate and easy to use. I can't say it is any better than Salifert, but having the digital readout is a plus. The one other thing I wish it came with was a little cloth to wipe the glass before putting it in the checker. I have one to clean glasses that I use and I think it would be easy to include that since the clarity makes a difference (same as all other Hanna Checkers).
Worked for me By MATTHEW on 9/24/2012
MATTHEW would recommend this product to a friend
I found that I was getting accurate results if the directions were followed precisely. Not as easy to use as the alk tester.
Test Results way too high By Bob on 9/11/2012
Bob wouldn't recommend this product to a friend
I've used this Ca Checker for several weeks now and can only conclude that it consistently measures the Ca concentration at least 100 ppm too high. I was really hopeful for this instrument but very disappointed. Going back to my Salifert kit that I can believe and trust.
Works for me By Christopher on 9/1/2012
Christopher would recommend this product to a friend
I just got this the other night and although I will agree it is a bit hard to measure out some of the steps, it does work and the reading was up to par with my other test kit. Only time will tell.
Highly recommend. By BRIAN on 8/30/2012
BRIAN would recommend this product to a friend
The Hanna calcium checker has worked great for me. I always get consistent results. It's simple to use with just a few steps to follow. No more trying to guess colors. Just make sure you have some fresh RO water on hand to use with the test.
Do Not Buy By Robert on 7/21/2012
Robert wouldn't recommend this product to a friend
I cannot believe Bulk Reef Supplies sells this product. It is horribly inaccurate. I bought this tester and wish I did a search on the internet before I did. Like myself, many others find this tester to be a total waste of money. It simply does not give accurate measurements of your tanks Ca levels.
Not That Great.... By Derrick on 7/7/2012
Derrick wouldn't recommend this product to a friend
So I have the phosphate and alkalinity checker from hanna and both are wonderful. Easy to use and accurate. The Calcium checker on the other hand is VERY difficult to use and usually the numbers are not even close. I think you need to have lab grade RO water and a specific instrument to measure the .1 ml of water. Hanna needs to make this easier to use somehow. My salifert and red sea test kits are so easy to use I would recommend those over this unit.
Terrible product By Francisco on 7/6/2012
Francisco wouldn't recommend this product to a friend
Be smart, due diligence and read the reviews posted here. In its present state, this tester is not reliable enough to rely on. Distilled water?? Powder?? .1 ml ?? Go Salifert or Elos and be done with it.
Not so precise! By Benjamin on 6/18/2012
Benjamin wouldn't recommend this product to a friend
Every time i test and retest using the same water sample I obtain different results.
Meh By Ben on 5/29/2012
Ben wouldn't recommend this product to a friend
It's innaccurate. It works, but it's innaccurate. And I've done research in genetic labs, its NOT the user on this one...