Going blind guessing which color is closest

OgreMkV said:
Find a woman that has 4 types of cones in the eye rather than 3 like 99.9% of humans. The fourth cone gives them much greater color perception. I'm married to one and she can tell color differences very well... she's also a trained artist.

That's all I got.
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this is interesting! why does it have to be a woman? can men have this same thing? i guess you might be hard pressed to marry him depending on where you live tho :rofl:
 
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Actually, it almost has to be a woman because they have two X chromosomes. The allele for the cones come on the X and Y chromosomes. Women have two Xs and thus can end up with four different alleles for cones. Guys, because of our short Y chromosome, only have space for three alleles (2 on the X and one on the Y).

Everything I've read has suggested that it's a fairly new mutation that causes this. It's not scientifically verifiable that the fourth cone improves color vision. Most humans can distinguish something like 10,000,000 colors, but the fourth cone gives those people the ability to distinguish 100,000,000 colors.

This is all going from memory, so I may be off on some numbers... I'll try to find the reference if you like.

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Actually the one he has is rediculous bad. i have the same kit and i hate it for that reason. I also have a phosphate test kit from sieftert that is even worse. you get to choose from light blue to light blue or light blue. could be anything from .01 to .5 .
I do like my API kit i have, most of the tests are easy to tell and even use different colors from one level to the next in most instances.
 
So the API kit is easier to read? I have an API test kit but its the REEF MASTER KIT, I like it, results are fairly clear. Maybe I'll get the API Salt Water Master Kit. I just didn't want to waste money buying different kits only to find them to be like the one I already have.
 
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The left is the Elos pH test kit. The range is from 7.5 to 8.5 and the gradations are very distinct.

Top right is my crappy Tetra Test Nitrite kit... difficult, but not impossible to use.

Bottom right is the API Ammonia kit... again, pretty easy to tell the difference (at least for saltwater), the big problem is that if there is a hint of green, you're already in the danger zone.

I'm a big fan of the Elos kits, but I have these others to use and the Elos ones are not cheap. The other two Elos kits I have are titration based, not color matching based, so that won't help.

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I've never heard of Elos. All I have seen at my LFS are API and RED SEA. That's also all I ever see other people talk about online... I'll definitely look into the Elos line. Thank you so much for your input.

By the way, this is me being lazy after getting off work and not wanting to look it up myself, but what does titration based mean? lol Never heard that before
 
flairbrtndr said:
I've never heard of Elos. All I have seen at my LFS are API and RED SEA. That's also all I ever see other people talk about online... I'll definitely look into the Elos line. Thank you so much for your input.

By the way, this is me being lazy after getting off work and not wanting to look it up myself, but what does titration based mean? lol Never heard that before
Click to expand...

Titration is where you do one drop at a time until the water changes color, then each drop equals a certain value of the stuff you're measuring.

Like a calcium test. Each drop equals 50 ppm calcium. So if it takes 8 drops to get the water to change color, then you've got 400ppm calcium.
 
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