STAX Natural Limestone Aquascaping Rocks 5lb**

STAX is flat, porous oolitic limestone for building layered aquascapes in marine or freshwater aquariums. Provides a stable structure and limitless creative fun! Avoid introducing pests and create the aquascape of your dreams. Use with STIX cement to make open, gravity defying structures with lots of horizontal surfaces for attaching live corals. Use with Aqua Stik or Cor Affix to create a base for coral frags. Available in 3 package sizes: 5lb, 20lb and 40lb. Each box contains an assortment of rock sizes.