is it worth it? hanna checker

[farfromsea]

I have the Hanna Marine Master

I like it because it records all my data in a digital log. I get frustrated because if I navigate away from the app before a countdown ends and forget to go back to the app in time, the result doesn't transfer to the phone and then I can't save any measurements because the phone app missed one... (they are saved on the device but cannot be transfered from the device after the initial measurement is recorded.)

The ammonia test is super precise and accurate with a 14 min wait time...

I like the Nitrate, pH, and alk. Again these are easy to do, but the perk for me is the recording in the app (and I can assign the data to a specific tank!)

The calcium test will be inaccurate unless you clean with grade 2 sterile water. My store RODI has residual impurities because we have large amount of calcium in our water from the limestone-rich ground. Rinsing and doing the test with sterile water is key!

The phosphate test requires a 2 min of gentle shaking. The marine master helpfully has step-by-step instructions but the screen only says "until dissolved". Shaking for 2 min and rinsing with sterile water before and after the phosphate test is the only way to make it work.

Summary: I like the data recording, the app kinda blows because of how easy it is to miss a data point and then the entire session of results, the tests are accurate, but calcium/phosphate requires extra care and special water. Also it cannot test for iodine or copper just fyi.

 

[fishnplants]

@farfromsea not to worried about trace elements rn more than just the basics of alk, cal, phos, and nit. once i get into some sps ill get into more of that. but you say i cant use regular RODI for cal? how off was it when u didnt do it w the sterile water

 

[Kfactor]

there good just clean them with rodi after and keep finger prints off . when you test do it the same way every time you test only time i use other test is when somthing seems off to double check.

 

[farfromsea]

@farfromsea not to worried about trace elements rn more than just the basics of alk, cal, phos, and nit. once i get into some sps ill get into more of that. but you say i cant use regular RODI for cal? how off was it when u didnt do it w the sterile water

My local water is high in calcium. It gave me readings of 600 ppm every time and a test error. I bought sterile lab water for $17 on Amazon. Maybe if your local water is not hard you won't have an issue

 

[reeferkojack]

was looking into getting a hannah marine master and was wondering if it was worth the investment. trying to find something to help me hit all the corner paramaters precisely and was thinking this might be it. any info helps

I have the the Hannah ALK, Nitrate, ULR Phosphate and Calcium Hannah checkers. The ALK and Nitrate are great! Calcium was a waste of money. Phosphate I don’t even really check often, so the jury is out on that one. The Hannah Alkalinity test is the best one for sure!

 

[reeferkojack]

there good just clean them with rodi after and keep finger prints off . when you test do it the same way every time you test only time i use other test is when somthing seems off to double check.

Agreed, I always rinse them with RODI after testing and always wipe them down before calibrating and before testing with reagent. Very important!!

 

[fishnplants]

update: finally bought mine, hoping this marine master is like all yall are sayin and this should help me with all my params inaccuracy/ problems. currently dealing w GHA and bubble algae