Back in about '92, a bunch of us were talking about stuff on sci.aquaria (usenet newsgroup), about how to set-up the perfect saltwater reef tank. One of the folks had been working on getting corals and annenomies to spawn, had very healthy animals, but they just wouldn't spawn. We all kicked around ideas, inclding running timers and different wattages of
small light bulbs in the corner of the room at night. When he started running small lights at night, simulating phases of the moon, the second month all the corals and the annenomies spawned! It was very cool to read about it - the progress we were all hoping for. Basicly it means that if folks did things right, the coral reefs woundn't need to me harmed to supply coral (etc) for the aquaria industry. :-)