When measuring the suggested 8" from water level, do I make the reflector 8" and the bulb is actually closer or do I measure from the bottom of the bulb to the water level? I"m assuming it would be 8" from the bottom of the bulb to the water.
reefrunner69 said:To get the most out of the bulb...they should be mounted perpendicular, if space allows. You will lose less light out of the front of the tank with a perp parabolic reflector and bulb