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That's the same bottle I have ... except that the LFS only had the larger (and significantly more expensive!) size. I shouldn't need to buy it again until about four years after I'm dead . . . (9_9) Works just fine, in my experience.
~Bruce
What brand of copper and test kit do you like best ?
I do have problems reading colors, that's why I use Hannah's.
So that's why I'm worried about reading colors properly, with such a deadly overdose product like copper.
I like Coppersafe and the API test kit the best. I'm used to the test kit, and reading it so I never have trouble with it. Some people tend to have issues with reading the colors - just fyi.
Is that the digital low range checker? HC-H1747I do have problems reading colors, that's why I use Hannah's.
So that's why I'm worried about reading colors properly, with such a deadly overdose product like copper.
Yeah, but it's still a color difference test.FYI; Below are two "professional grade" test kits capable of measuring all forms of copper. Public aquariums, research institutions, etc. prefer these over "hobbyist grade" copper test kits.
Copper CHEMets Kit: https://www.chemetrics.com/index.php?route=product/product&product_id=392
Hach Copper Test Kit: http://www.hach.com/copper-free-total-color-disc-test-kit-model-cu-6/product?id=7640217308
Yeah, but it's still a color difference test.
I'm finding it's getting harder to see the differences
Have you tried asking your wife or someone else to double check your readings? That's what I do whenever I'm in doubt.
Don't take this the wrong way, but many people are colorblind (to some degree) and don't even realize it.
I have asked her and she is as bad as me.
I would have to say for some it's just a age related thing.
Oh yeah.See, young people are still useful for something.