One of the thing I like about these growouts is they really illustrate how much a tank will change a coral. A friend of mine will swear it's a different coral than what we started with. Lighting, nutrients, and elements play such a unique roll. My tank is currently going through some Kind of natural phenomenon because my nitrates are sitting at at least 80 and I have done 3 water changes without any change while testing every other day. I can see that I lost some color but for the most part everything looks good still. I honestly question the idea of running a low nutrient tank sometimes