PSA: Ditch your API test kit

MnFish1

10K Club member
View Badges
Joined
Dec 28, 2016
Messages
26,916
Reaction score
24,617
Location
Midwest
Rating - 100%
2   0   0
Isn't that what has been debated this entire thread though, with a large group saying all these hobby grade tests are as accurate or inaccurate as we make them? I feel I can perform a test and interpret the numbers pretty well, I have used API before. But that was a much different scenario. My question was largely in part to the claim that the test will some how be a whole month behind a digital reading.
Yes
 

MnFish1

10K Club member
View Badges
Joined
Dec 28, 2016
Messages
26,916
Reaction score
24,617
Location
Midwest
Rating - 100%
2   0   0
For a difference of opinion perhaps with many years of experience @vetteguy53081 seams to have little faith or trust for api kits .
even though even when I started , api was easily accessible and affordable , you really didn’t hear of all these other test kits

why was api the leading test kit for many Years and all of a sudden not
I have about 10 years on @vetteguy53081 and we have had multiple private discussions about API. IMHO - it's all about how you do the test. Most of the debate is the copper test.
 

MnFish1

10K Club member
View Badges
Joined
Dec 28, 2016
Messages
26,916
Reaction score
24,617
Location
Midwest
Rating - 100%
2   0   0
I have about 10 years on @vetteguy53081 and we have had multiple private discussions about API. IMHO - it's all about how you do the test. Most of the debate is the copper test.
However years alone is not a definition of success. There are others claiming they have a tank that is xxx years old. I was not trying to disagree with @vetteguy53081
 

vetteguy53081

Well known Member and monster tank lover
View Badges
Joined
Aug 11, 2013
Messages
108,095
Reaction score
242,655
Location
Wisconsin -
Rating - 100%
17   0   0
For a difference of opinion perhaps with many years of experience @vetteguy53081 seams to have little faith or trust for api kits .
even though even when I started , api was easily accessible and affordable , you really didn’t hear of all these other test kits

why was api the leading test kit for many Years and all of a sudden not
Ive been in hobby now 41 years and once upon a time it was Api, tetra, seatest kits with the little pill as examples. There was no ICP, digital anything and more understanding now of testing equipment and analysis
 

brandon429

what, exactly, are you doing in your avatar
View Badges
Joined
Dec 9, 2014
Messages
31,035
Reaction score
23,923
Location
tejas
Rating - 0%
0   0   0
The changing cycling rules are redeeming api I can see.

example- 1991: any ammonia detected means the cycle is broken, stuck, continuing, not done, and your tank is likely going to die soon unless you buy something or take a decisive action

it doesn’t matter if you convert the reading to nh3 like the directions say, what only matters is if the initial reading says anything above hard yellow zero.

Animals in this water are in pain if there’s anything but hard yellow zero reading for their water

therefore, api‘s known propensity for .25-.5 reading in tanks (caused by myriad subtleties in the kits and test takers and room lighting and angle of dropper and subjectivity interpretation / name the cause it doesn’t matter this is what everyone but the most exacting chemists can expect to see) was 1000% interpreted to mean the tank wasn’t handling ammonia. This is every stuck cycle post ever made to the internet we can search on the goog

vs

2023, years after digital seneye meters came online and thousands of uploads are on the web for searching:

conversion to nh3 matters, context matters, and stocked / post cycle reef tanks don’t run zero ammonia

ergo, the ten million .25-.5 api tests ran on stocked tanks as nh4 were reading rather correctly given the context of the setups AND the natural variations test takers and the kit itself have inherently. No panic is needed in 99.99% of cases, given the rule that reef tanks don’t run zero ammonia to have detected some with api only confirms what we expect now that precision digital test kits have been telling us that since they came online for the hobby (mind stream in ~2013 and seneye thereabouts…mindstream is defunct and seneye continues strong)


the changing rules in cycling that sellers of bottle bac chose not to tell us matters big time in hating or loving api (they who are uninformed will buy our bottles of bacteria redundantly until the end of time, doubt in cycling equals strong sales for the retail market)
 

brandon429

what, exactly, are you doing in your avatar
View Badges
Joined
Dec 9, 2014
Messages
31,035
Reaction score
23,923
Location
tejas
Rating - 0%
0   0   0
I still have plenty of threads available where api reads dark green, black in some cases, in perfectly normal tanks.

at no time, no time, does what api says override the known dynamics and wait time from updated cycling knowledge. any type of cycle approach has a countable number of wait days to completion that will override what errant test kits say. This is why all cycling charts have a time axis and it’s not different chart to chart. Api isn’t out of the woods but I went from a hater to an acceptor based on Dan + Tarichas work + all collective seneye posts in reefing we can scrape from the boards.

there have been some seneye misreads too we can see. i can see that no test is perfect in reefing.


the reason people hate api is it’s rather accurate reading averages conflicts with their perceived rule set. It’s not that the kit itself is terrible like I once thought. Change the rule set changes the quality interpretation of the kit at hand.
 

MnFish1

10K Club member
View Badges
Joined
Dec 28, 2016
Messages
26,916
Reaction score
24,617
Location
Midwest
Rating - 100%
2   0   0
I still have plenty of threads available where api reads dark green, black in some cases, in perfectly normal tanks.

at no time, no time, does what api says override the known dynamics and wait time from updated cycling knowledge. any type of cycle approach has a countable number of wait days to completion that will override what errant test kits say. This is why all cycling charts have a time axis and it’s not different chart to chart. Api isn’t out of the woods but I went from a hater to an acceptor based on Dan + Tarichas work + all collective seneye posts in reefing we can scrape from the boards.

there have been some seneye misreads too we can see. i can see that no test is perfect in reefing.


the reason people hate api is it’s rather accurate reading averages conflicts with their perceived rule set. It’s not that the kit itself is terrible like I once thought. Change the rule set changes the quality interpretation of the kit at hand.
And - of course, if you took 1000 reefers testing their already cycled tanks - according to the instructions of an API test kit, my guess is you would have 995 people reading 0 ammonia if they follow the directions. But - its becoming unclear to me - is the thesis get rid of all ammonia test kits? Or is the thesis get rid of API test kits. Using your logic - there is also no reason to buy a Seneye correct?
 
Last edited:

nereefpat

7500 Club Member
View Badges
Joined
Apr 20, 2018
Messages
8,185
Reaction score
7,731
Location
Central Nebraska
Rating - 0%
0   0   0
My thesis is that it's impossible to argue with someone about API ammonia kits and saltwater fish tanks with someone that does use API ammonia kits and doesn't keep saltwater fish.
 

jabberwock

2500 Club Member
View Badges
Joined
May 14, 2018
Messages
4,749
Reaction score
5,678
Location
in front of my computer
Rating - 0%
0   0   0
My thesis is that it's impossible to argue with someone about API ammonia kits and saltwater fish tanks with someone that does use API ammonia kits and doesn't keep saltwater fish.
Arguing is easy...

Agreeing? Well that's another matter entirely.
 

MnFish1

10K Club member
View Badges
Joined
Dec 28, 2016
Messages
26,916
Reaction score
24,617
Location
Midwest
Rating - 100%
2   0   0
My thesis is that it's impossible to argue with someone about API ammonia kits and saltwater fish tanks with someone that does use API ammonia kits and doesn't keep saltwater fish.
Were you disagreeing with my point? If so - I'm curious as to why? Its fine to disagree:)
 

Timfish

Crusty Old Salt
View Badges
Joined
Jul 22, 2012
Messages
4,468
Reaction score
5,477
Location
Austin, TX
Rating - 0%
0   0   0
The DFWMAS reef club used to have a .pdf of an experiment they ran looking at different test kits and having one of the first companies to provide a wide spectrum test for aquarists. Their results showed quite a wide range of results depending not on the test kit but on the user. FWIW, API did as well as most of the other test kits. A new aquarist should try different test kits/testers to see what they find easiest to use and still be fairly accurate; when new test kits are acquired they should be compared to older test kits to see if there's been degradation in reagents (depending on how reagents are stored they can go bad long before an espiration date); instructions should be checked to be sure steps or methods haven't been forgotten. And always remember there's a lot more going on than just what we can test for.
 

Attachments

  • DFMAS TestKitAnalysis.pdf
    329.2 KB · Views: 93

brandon429

what, exactly, are you doing in your avatar
View Badges
Joined
Dec 9, 2014
Messages
31,035
Reaction score
23,923
Location
tejas
Rating - 0%
0   0   0
Tim that may be the best post on the matter I've seen in a long time. to add: choose the rule set you will apply before choosing a test, they're mutually opposing rulesets. you will deem your choice of test kit accurate or not based on the ruleset you apply


we either expect to find zero ammonia in a post cycle reef tank or we expect to find low persistent levels. can't occupy the same ground, there will be instant conflict depending on the choice made to use old vs new cycling science.

depending on the ruleset we use, we may not ever actually own an ammonia test kit. already knowing it's status in any reef display situation without testing is handier than needing a kit, or kits to verify one another.
 
Last edited:

brandon429

what, exactly, are you doing in your avatar
View Badges
Joined
Dec 9, 2014
Messages
31,035
Reaction score
23,923
Location
tejas
Rating - 0%
0   0   0
if I was running a qt tank, the seachem alert badge is what I'd use. we have misread posts on those too, but not four hundred thousand pages of them / api

of those many hundreds of thousands of pages, the ruleset chosen was the likely culprit. badges certainly have the lowest degree of prep steps compared to the other kits, that streamlines them too per above study linked it seems.
 
Last edited:

CAbercrombie

Community Member
View Badges
Joined
May 27, 2025
Messages
59
Reaction score
29
Location
33881
Rating - 0%
0   0   0
when i used api, i am able to 100% confirm that they are inaccurate. how do i know? well, i was able to confirm with 2 additional test kits.
ammonia-always reads .25 where as a red sea kit will read 0, and also confirmed by an LFS.
nitrite- the last time i cycled a new tank, my api kit tested .5. the LFS used an api kit and it tested 0. my red sea kit tested 0.
phosphate-apit kit is horribly inaccurate. reads .25 or more when there is less than .02.
ive also had api kits not even change color with regards to a nitrate test, which is obviously wrong, and was confirmable by doing a red sea test.

they are good starter kits, but if accuracy means anything, for the person using it, the readings should be taken with skepticism
I know its old but your saying its .25 and .2 off and thats actually not bad .2 and .25 off isn't going to kill or hurt anything so like others said they have their place. New people in hobby aren't going to spend 100s on test kits but will spend 40 on a test kit
 

jabberwock

2500 Club Member
View Badges
Joined
May 14, 2018
Messages
4,749
Reaction score
5,678
Location
in front of my computer
Rating - 0%
0   0   0
I think API test kits are just fine for when you are just getting a tank started and testing a lot. As with any other test, you have to follow the procedure exactly, maintain consistency, and cleanliness. Their downfall, I believe is the subjective color observation. People SEE color differently...
 

tharbin

10K Club member
View Badges
Joined
Oct 22, 2021
Messages
12,294
Reaction score
73,821
Location
Arizona
Rating - 0%
0   0   0
API TEST ARE NOT GOOD ENOUGH IN MY OPINION THE ACCURACY IS OFF BIG TIME IF YOU COMPARE THEM WITH HANNAH CHECKERS......
I'm sorry but this statement makes no sense to me.

Saying that a hobby-grade test kit is inaccurate because it doesn't give the same results as another hobby-grade test kit seems to imply that the Hanna kits are laboratory grade but they are not. How do you know it is not the Hanna test that is inaccurate? Most likely they are both inaccurate.
 

TOP 10 Trending Threads

WHAT AMOUNT OF LIVE ROCK AND SAND SHOULD BE PRIORITIZED FOR OPTIMAL BIODIVERSITY/FILTRATION?

  • 100% live rock + bagged sand

    Votes: 37 27.8%
  • 100% dry rock + 100% live sand

    Votes: 45 33.8%
  • 50/50 live/dry rock, 50/50 live/bagged sand

    Votes: 29 21.8%
  • 75% live rock, 25% live sand

    Votes: 12 9.0%
  • 25% live rock, 75% live sand

    Votes: 10 7.5%
Back
Top