Haha its ok. Keep in mine the new apogee, you need to add 30% to all your readings taking in saltwater.I borrowed an unopened Apogee MQ-500 quantum meter to test the PAR readings on both of my tanks. The metal halide bulbs on the 120 gallon are 9 months old and the T5's are and the bottom of the metal halide pendant is 9.75" above the water surface. The bulbs on the 80 gallon are 11 months old and the bottom of the Sunpower is 8.5" above the water surface.
The next day I replaced both of the Hamilton 20K metal halide bulbs but kept the same T5's running. The bottom of the metal halide pendant is 9.75" above the water surface and PAR increased on average 23% versus the 9 month old metal halide bulbs. The left metal halide ballast is drawing 269 watts and the right side is drawing 257 watts.