I have been using homemade rock (agrocrete) for 2 years, and am setting up a 120 gal aga, at the end of Aug,and am considering getting all new LR for the tank, and just transfering my corals and putting all my current LR in my refugium, where would be a good place to get some premo LR for a good price?> And what type of rock would anyone reccomend? Thanks..