Red Sea R11232 Coral Pro Salt Sack 200gal rat bait station • Type : Digital Converter • Type : Digital Converter Box w Analog Pass Through 5 simple steps to assemble solid wood frame heavy duty wire mesh panel weather resistant asphalt roof protects from sun and rain adjustable feet for uneven surfaces water resistant adjustable leg pegs includes extra floor panel for stacking or solid wood floor panels for single story back door can be raised and lowered allowing pets to enter and exit the hutch freely when attached to the Multi Plex Play Yard includes a ladder for access to different levels (when stacked) for added protection from the elements a divider panel is included for inside the hutch creating 2 separate spaces (but accessible to each other) optional ventilation panels increase ventilation in warm weather and keep Hutch warmer in cold weather Main parameters at a salinity of 33 Coral Pro salt is ideal for reef aquariums in particular for LPS and SPS corals and growing out coral frags