Oafboy, yes the Moonlight is white. No iisue there except that I prefer it to be blue. I had my own DIY
blue moonlight and it is more pleasing looking to me at night than the bright white LEDs. Too bright in my opinion for the tank of my size - 46g.
Ok, why I said it is probably not the bulb is that there are 4 wires on each 4-square pin bulb. Blue&black wires and Red&black wires. I believe the black is ground. The same goes to the Actinic bulb. What I did was to unconnect the 4pins connector, flip the bulb so that I hooked my 4 pins connector the other way. The pin that is used to connect the Red wire is connected to the blue wire now. The tube that is on the right is now on the left. So when I turned on the power, the tube that is on the right is always lighted up. No matter how I flip it, the left tube is always lighted up. That seem to correspond to the Blue/Black wires. So it make sense to me that one tube of both bulb is not working because the red wire is connected to one of the 2 pins at both bulbs.
Anyway, not sure their configuration is, just thinking that they may have 2 ballast. But not sure, that why I am so eager to talk to them to try to figure out what is wwrong. The bulb or anything else, but how????? Every electrical wire is hide behing the reflector so unless I dismantle the hood, I can't see the wiring.