(bringing this thread back from the dead) I live in Jax now and found a decent store. Jolly's Reef Shack at Blanding and Wilson. They had a really nice set up right at the front door with koi on one side and rays and sharks on the other. Their prices are a little steep on fish but food was the same as the big chain stores so thats nice.
ill have to check it out thanks, i did find a really good salt water guy in green cove springs, he is a hobbyist but has a license and sell pumps and stuff DIRT cheap