You just got to put the mitten on the kitten!
I'm anxious to get my triton test sent off but probably won't be until April at the earliest.... I think the ranking of what is important is kinda relevant but IMO pretty much all of what you listed above is going to play a pretty major role.... Like for instance I noticed you have water source as 10.... Is it a 10 only because you never had to worry about it and have had success not worrying about it? Because for others source water can become a nightmare quite quickly for a reef tank and would rank as probably a 2 or 3.... I really liked the part where Richard talked about testing and how if we get "good" results then we don't worry about it.... But then again what is actually "good" when it comes to nitrate and phosphate....
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I like this post

. I don't necessarily agree with good test results or bad when I see them, maybe he is talking about people new to the hobby.. If they are different than expected, I retest and retest because intuition says something isn't adding up.
The only thing I think that is a take home message from that thread on RC is that you shouldn't chase numbers with your tests. And that tests are not that accurate so take them with a grain of salt

That isn't anything a lot of experienced reefers didn't know already though. Thales I believe came onto this forum to gauge reaction to some of his posts over on RC, not to contribute, which is fine. Personally I have found that Thales has contributed some great info over on RC and stimulated some great discussion, but I think his skepticism is over the top and skeptical for the sake of being skeptical. I find his approach to argument and questioning of his line of thinking inconsistent and biased, but that is just my opinion.
The part of keeping that is over looked is dedicated observation and husbandry IMO. Every system is different. The best reefers I've known rely more on their gut and intuition than test kit results, but these results do guide decision making. Phosphates are a byproduct of introduced nutrients to the system. Too much, you have problems, too little, ditto. No different than other variables. Usually after a while you can observe things are out of alignment, and act accordingly. Just because your phosphate level is different than darryl's and your corals still look good should come as a comfort, not as a surprise. Successful reef keeping is a practice, a dedicated one, the more you practice the better you'll get. Applies to phosphates and everything else.