Enjoy this real Caribbean live sand in a breathable bag with no added chemicals or special processing. Highly recommended for small Marine Tanks, this beautiful substrate also comes with a Bio-magnet sachet to remove any initial cloudiness from the water! Simply Effective - Ocean Direct is different than all other live sand products on the market. This live sand utilizes patent pending Sea Breathe laser technology which preserves real life sand with its own original bacteria. Every bag of Ocean Direct is alive and breathing with up to 1000 times more beneficial bacteria than other preservation methods. Every grain of Ocean Direct is coated with bacteria and encapsulated by capillary action in a thin film of real ocean water.The thin film is open to the atmosphere for unparalleled gas exchange. This results in high counts of natural and beneficial bacteria with no noxious build up of metabolic by-products.Each bag includes a packet of Bio-Magnet clarifier to reposition the free floating bacteria to where they are most active; sand beds, surfaces of live rocks, and to biological filtration media. Ocean direct provides you with a thriving, natural aquarium in minutes! Ocean Direct is available in 5, 20 & 40lb bags.