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Testing help

SkylerCK117

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How come I test calcium using API and get 390 and then when i tested calcium with Hanna Tester it says 550? I’ve read the manual a million times and watched videos on how to use the Hannah tester so I’m confident I’m using it correctly. Any help/ideas?
 
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PatW

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I have used the API. OK for quick and dirty. Never used the Hanna but. I understand that the sample is diluted and that can magnify small errors. I use Red Sea Pro. And I understand that Salifert is good. If you have questions, Bulk Reef Supply has a video comparing popular calcium tests. Be warned, they do not deign to cover API.
 
Top Shelf Aquatics

brandon429

why did you put a reef in that
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when this happens with nitrate: the bacteria have died. buy another round of bottle bac. first one was dead/nitrate was zero after my cycle (and then another tester reads 40 ppm)


:)

test kit drift nearly ruined microbiology in reefing, nearly.
 

Miller535

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when this happens with nitrate: the bacteria have died. buy another round of bottle bac. first one was dead/nitrate was zero after my cycle (and then another tester reads 40 ppm)


:)

test kit drift nearly ruined microbiology in reefing, nearly.
I'm not following, the op's problem was testing Calcium
 

brandon429

why did you put a reef in that
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it was a comparison how that variance affects reefing across params

most tests like this have such a spread

seneye vs api for ammonia for example, a big spread impacts how we see bac

nitrate etc

test drift is more than just annoying, it greatly affects how we approach cycling, I stated that in relation to how it affected his view on calcium levels. he might've started dosing based on the wrong one.
 

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