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Saltwater Aquarium Lighting - Chapter 4

Introduction to Coral Lighting

By Stan & Debbie Hauter, About.com

Don Carner's Corals

Don Carner's Corals

At the end of Chapter 3 I mentioned SPS corals and the necessity for proper CRI and intensity. First and foremost, most corals can be placed into three major catagories: Stony (exterior skeletons), Soft (no calcium-based skeleton), and SPS (Short/Small Polyped Stony). Naturally, the scientific world can catagorize these animals down to the "inth" degree, but for our purposes these three categories will suffice.

When it comes to how corals grow, each category of animal requires its own unique lighting requirements, but all share one common trait; photosynthesis in order to survive. Just as plants convert sunlight to produce chlorophyl, marine animals survive similarily by converting light energy into "food". Actually, this energy is consumed by zooxanthellae algaes that produce by products that the corals need to survive; a true symbiotic relationship.

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