Reeftech, in the Medford Center. Great store, will have just about anything you need. Yes the prices are higher than up north, but he is the only real reef store south of Salem.
Nui Kai, on Main street between Central and Front. (closed on Sunday and Monday) New owners. Not a big selection, but sometimes there are some real nice things.
Frog Prince water gardens. Grants Pass south I5 exit, left at the Dutch Brothers, cross the tracks they will be on the left. (closed on Sunday) Great selection of zoas and paly's, good prices.