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...
Test kit By robert on 5/14/2012
robert would recommend this product to a friend
With API test kit I got 420 with this 442 for the cost diffrence I would have stayed with the API kit,
Good kit, but very time consuming By Laura on 5/3/2012
Laura would recommend this product to a friend
I found tat the API calcium test was less time consuming, and pretty effective. I won't reach for this kit as often as I thought I would.
Great tester, but testing is time consuming. By Laura on 5/3/2012
Laura would recommend this product to a friend
I found that I prefer the API calcium test kit because it had less steps, and was reliable.
This is a good tester By thomas on 4/22/2012
thomas would recommend this product to a friend
I see lots of reviews on the challeges of using this tester but is not that hard at all just follow the instructions and you will have accurate instant results. throw out that color matching junk and get with the new world of digital readouts
works but a lot of steps By Nikunj Patel on 4/9/2012
Nikunj Patel would recommend this product to a friend
great product wish the calibration had less steps
great By nikunj patel on 4/9/2012
nikunj patel would recommend this product to a friend
great product, first one that was sent was defective but BRS was great in replacing it no hassle.
Terrible Product By J Co80 on 3/31/2012
J Co80 wouldn't recommend this product to a friend
Never got an accurate reading!! Always had either a flashing 600 meaning cal levels were over 600 or L.lo meaning low light......
Simple and Accurate By Rod on 3/29/2012
Rod would recommend this product to a friend
The bottom line is this is a great test kit so long as you read and understand the directions. Double reduncancy testing on several separate occasions have proven it accurate and cosistant.
awsome but a bit complex By mygolfisslow on 3/14/2012
mygolfisslow would recommend this product to a friend
i recently won one of these in a raffle. and love it. it is super accurate. the process is a bit complex but once you get the hang of it, it goes quick.
great product By Scott on 3/5/2012
Scott would recommend this product to a friend
This is so much easier with the digital readout.
nothing consistant By russell on 3/2/2012
russell wouldn't recommend this product to a friend
tested 10 times got ten different results using 0 tds r.o. water called hanna tech support guy told me it was too difficult to use and he himself would not use it on his own reef tank!!!!!!! This coming from the hanna tech himself I wont mention his name...... Then he sent me the "other" intructions not included with the unit still did not check consistant,, but better than at first. My salifert will give the same results time after time. This test kit will sit and collect dust being I cant return it !!!!!!!!!!!!
nothing consistant By russeko8 on 3/2/2012
russeko8 wouldn't recommend this product to a friend
tested 10 times after purchase got 10 different results called hanna for tech support guy told me he used it, and it was difficult would not use it on his own tank!!!! Then sent me the other instructions not included with the unit to help get good results still was not that consistant. My salifert tester checks the same everytime. This thing will sit and collect dust being I cant return it!@!@!\ Thanks
Not accurate enought to be useful By Actuary on 2/22/2012
Actuary wouldn't recommend this product to a friend
I am a big fan of some of the other Hanna Checkers - primarily alkalinity and phosphate. However, they really missed the mark with this checker. Not only is the test rather complicated compared to the others, it is highly inaccurate. I should have looked at the specifications where the accuracy is stated as +/- 6%. I purchased it to try to get an accurate daily calcium uptake in my SPS reef. When you get consecutive readings which are 50 ppm apart it is essentially worthless. Stick with a good titration test kit such as Elos or Salifert until Hanna makes some serious improvements.
Another Good Hanna Coloromiter By Roy on 2/18/2012
Roy would recommend this product to a friend
While I did not buy my Calcium Colorimeter through BRS(and paid more), I am very happy with it. It is a little more complicated testing procedure than their other Colorimeters but I've found it to be accurate. I also use distilled water for the test and make sure to be very accurate with all the measurements. It's much better and faster than doing a titration test to determine Ca levels.