• Welcome back Guest!

    MARSH is a private reefing group. Comments and suggestions are encouraged, but please keep them positive and constructive. Negative threads, posts, or attacks will be removed from view and reviewed by the staff. Continually disruptive, argumentative, or flagrant rule breakers may be suspended or banned.

It's Here!! (1 Viewer)



Enjoy Life!
Supporting Member
MARSH Secret Santa 2020
Build Thread Contributor
Apr 14, 2020
Reaction score
I used the Hanna nitrate checker for the first time on Thursday night. As I saw on a review video from the place I purchased it the testing process is fairly involved. Not undoable but it seems tedious the first few times you test with it. I've used it 3 times now and each time gets easier and more comfortable.

At first I was very unhappy with the results. The last 3 times I checked my nitrates using the Nyos test kit back in late April my levels were 25 ppm. The Hanna checker tests in the range of 0 to 5 ppm. If your levels are greater than 5 ppm then you need to go through a dilution step first. Because of my previous readings I did the dilution step for my first test. After applying the multiplier my test result was 3.1 ppm. I thought to myself there's no way my nitrate levels are that low, this thing is garbage. So I cleaned everything up and redid the test without the dilution step. My second test yielded a value of 1.18 ppm. Not believing my nitrates were that low I was thinking that I had wasted my money. Dang. However, over the weekend I had a thought that if my nitrates were somehow really that low then that might explain why some of my LPS corals were experiencing tissue recession. Sunday night I decided to test my nitrate levels using all 3 test kits that I have. Here are the results:

Red Sea: ~0.5 ppm
Nyos: <1 ppm
Hanna Checker: 1.9 ppm

To my surprise I confirmed that I really do have low nitrates. I was SUPER shocked. Dang algae scrubber works too good! Also learned that the Hanna checker seems accurate enough. I like that I no longer have to guess which color matches which color. That part I really like!! Overall I really like the new nitrate checker. You will have to get used to all of the steps but in the end I believe it to be worth it.




Vice President
Staff member
Content Moderator
Board Member
Supporting Member
Jul 23, 2014
Reaction score
Spring, TX
Don’t forget, we are giving one of those away to a lucky bingo winner :)

Users who are viewing this thread