Very late to the game but catching up quick. Thank you
@Manose for putting this together.
I've spent the past 2-3 days (on and off) reading this thread from start to here. I'd like to express my great appreciation to the OP and those that have assisted in this research for their investment in time and money. I would further say that I can see why one would become discouraged when confronted with so many that seek to negatively impact the study. Understanding the limitations of time and budget, and the curve balls life can throw at us, I find the information so far posted to be very useful. For comparison purposes (my understanding of the purpose of the research) I'd say the information provides great insight.
Confession, I run (3) Kessil AP700s over a tank that is 4' x 3' x 31" deep. I am very successful at growing acropora at depths of 22" with lights 15" above the tank, as well as less light demanding sps and lps corals at multiple depths. That by no means causes me to disregard the information being assembled here. As a matter of fact, I'm in the process of setting up a new frag tank (ZooMed 4' x 2' x 10" as fate would have it) and am looking for an alternative to the Kessils strictly on the basis of cost. The information you are compiling is EXACTLY what I set out to find. I have yet to make a decision as to what I will purchase, I have time on my side. I look forward to seeing your latest data and can say definitively that my frag tank lighting will be influenced by the information you provide. Thanks again.