I like the responses. It's basically what I have found talking to people over the years. I've never been the guy that has been able to get close to "zero", but I have had great colors. I always thought I could do better and strived for zero. Well, recently my tank has been getting close to zero. All of my corals look happy, but the colors just aren't as bright. They are growing and have great PE, better than when I the high nutrients. Now that I have seen the grass on both sides of the fence, I am going to gradually increase my nutrients a little and find my sweet spot.
A lot of what I am finding is different than people's advice. "I've always had success with..." seems to be a pretty common thought process. It doesn't mean it is the only way. Example - My Zoas and Palys are multiplying like rabbits. I have probably 30 different high end types. They seem to like my clean tank, so the dirty tank "rule" is not a rule it is just an example of a success.