Features: 1.Large particle dog bone bio bean with large contact surface area, don't need bean reactor, use directly in filter tanks or in filter case with sufficient water flow. 2.Can improve water quality of fish tanks and make the water quality of fish tanks achieve the quality of natural seawater. 3.When the NP bean system is full operational, can keep the nutrient levels in the tanks low rather than completely free of nutrients. 4.At the same time, can also support the increase of feeding amount of coral food, so that corals get enough food. 5.Effectively improve the water quality of fish tanks, the water nitrate and phosphate decomposition. Specification: Condition: 100% Brand New Item Type: NP Biological Bean Material: Polymer Plastic Color: As Picture Shown Quantity: 1 Bag Net Content: 300ml Weight: Approx. 485g Use suggestion: 1. Conserve enough water to stir the bio-np beans to avoid hydrogen sulfide gas 2. The use of ozone or UV will affect the biological supplement, prolonging the maturation time, generally speaking, the addition of culture agents can alleviate this problem 3. Prior to the use of biobeanies, such as in cases where nitrate and phosphate levels are already very low, it is possible to detect a decrease in supplemental NO3, PO4 with a labeled test machine 4. NP doug system is mature and can keep the tanks low nutrient level, rather than completely without nutrient, but also can support more coral grain feeding amount, corals get enough food, the nutrient levels dropped to a very low state, strongly recommend the use of all kinds of food to provide energy for coral, coral maintain their healthy. Adding mode: For every 200L water body, the amount of biobean added is 200~400ML For every 100L water body, the amount of biobean added is 100~200ML For every 300L water body, the amount of biobean added is 300~600ML PackageList: 1 x Bag of NP Biological Bean