I am almost finished with the Par Meter...thought I would post up the results...I played with the exposure of the pic to get the text to stand out a little, the back sections were too dark so the front is a little overexposed.

The equipment, a single 150 watt HQI Reefcube (M81). I tested two different bulbs, the first number is a 20K Radium and the second number is a 10K XDE, both in a LumenArc III Mini, if there is only one number, it is the Radium as I did not test all areas with the 10K. 40x40x17" Pentagon, rock arranged in a 24-30" cove. Most corals reside around the perimeter of the cove. Most of the corals are 18-20" in height from the bulb.

Par at the glass shield was 1200 for the Radium and 2200 for the 10K
Par at the water surface, 9" from the bulb, Radium at 780 and the 10K at 1900.



It is interesting that I am bleaching new additions and have been since I set up the tank. I am starting new additions out on the perimeter and moving them closer weekly.

I may test the 250 watt Phoenix with an ARO electronic ballast, but I may not, I don't plan on using the light, I don't think I will be needing more Par than the Radium is giving me. I am very happy and a little surprised by the results, I was expecting much lower numbers and was going to add a 4-24 wall LET Retro with Blue Plus bulbs, I don't think I will need to do that.