[BlueAbyss]

Hmm. I'm surprised that no one picked up on this sooner (or commented). Maybe it takes someone who is an avid indoor gardener and 'reefer' to see the similarities.

I have a pretty extensive collection of indoor plants and have been researching the possibility of a light garden, and saw the similarities right away. The only difference between metal halide for plants (and for weed for that matter) and that for coral (or the higher K lighting, 10K, 14K, etc. sold for marine tanks) is the bulb. For effective flowering and fruiting, plants need a fair amount of the red spectrum that is lacking in higher K bulbs (part of the reason those bulbs generally rate lower in PAR), which is why AgroSun bulbs have become popular for indoor growers who grow flowering / fruiting plants... I'm off topic here. The fact is that much of the equipment is interchangeable, since you are growing photosynthetic (well, mostly in the case of corals) organisms.

For the record, I'm betting that I can build an LED rig that will grow flowering plants, as well as coral, equally well.