About the API test kit I don't fully understand because some of the results do not match the colors. Can anyone explain it? Iv done more than one on all the tests. PH - Pretty much matches 7.6 High Range PH - Doesn't match any of the colors because its yellow Ammonia - Pretty much matches on this one. (was 0 and then looked not quite as yellow but not as green as 0.25) Nitrite - Doesn't match any of the colors it is definitely not 0 or any of the other colors either. It makes .25 and all the others look VERY purple doesn't match at all as it is a light clear different color blue but it isn't the 0 color either Nitrate - Its 40 or 80 I think because the colors are so close it's hard to tell but it's closer to them the the other oranges.