Homegrown coral reefs are beautiful and potentially dangerous
SECAUCUS, N.J. At an expo calledReef-A-Palooza, 4,000 coral reef aquarium hobbyists gathered to swap fragments of coraland ogle $100-a-pop sea horses. The burble of water pumps and commerce filled the convention hall. Sellers hawked glittery clams and other odd creatures, some spineless but all vibrant. Reef-A-Palooza had the atmosphere of a carnival, except the