where were you when I needed you!!
the point I was trying to make is just as you say, that there are alot of other benefits to having a refugium, but not nutrient control, I struggle to grow any macro algae, and when a little does grow, it quickly runs out of nutrients and I have to remove it. But the critters that thrive in the ref are brilliant.
I don't beleive for a moment, what Layton wrote, that the bioload of these critters and bacteria in a std size ref is massive, more than all the fish and corals in the main tank put together.
The fact is I am not feeding these critters, would not input any less food, or additions if I didnot run a refugium so can't see his point.