The Reef Tank banner

brown lv sand and rock

  1. General Reef Discussion
    My 29 gallon Bio-Cube has been up and running for two weeks. I have live sand and rock in the aquarium, with two damsels and two clowns, one dotty-back, and a cleaner shrimp. I noticed that my live sand is turning brown on one side of my tank, and my live rock is turning to a darker brown...