Why Blue Light?

[samtheman]

So another reef myth exposed.

[MCsaxmaster]

Yeah, this has been a pervasive myth/misunderstanding. With many such misunderstandings (e.g., zooxanthellae give corals their pretty colors) there is limited potential to cause harm to the actual corals. With this misunderstanding there is the potential for serious harm: overexposing corals to UV will harm or kill them, just like it will to any organism.