1.K3 BIO FILTER MEDIA: K3 MovingBed Biofilm Reactor Filter Media (MBBR) is efficient in creating the perfect environment for fish and plant life. The K3 Bio Media provides maximum surface area for the growth of beneficial bacteria to support the nitrification cycle making this media very efficient. The large surface area builds strong good bacteria colonies to support the natural nitrification cycle in converting ammonia to nitrites and nitrites to nitrates. 2.SIZE AND DIMENSIONS: The size of K3 filter media is 25mm x 12mm with a surface area of >1,000 m2/m3. Bio Media Plus is manufactured from VIRGIN HDPE. ADVANTAGES OF K3 BIO FILTER MEDIA: The filter media has large specific surface area, which can increase the area where nitrifying bacteria attach. Its density is close to the water, so that it can flow through water. 3.FILTRATION APPLICATION: This K3 filtration can be used to fresh water and marine aquariums, pond filter, aquaponics, aquaculture, hydroponics water filtration. This makes a great birthday or holiday gift for anyone who has a fish tank or hydroponically grows plants. Great for friends, coworkers and family. 4.EASY TO USE MAINTENANCE: It's very easy to use the fish filter media. Bio Media Plus K3 Filter Media is designed to be selfcleaning. For a static bed filter, you just need to pour the media into the sump tank water, container, or mesh bag you don't have to clean it at all. Just let the media stay in the water where they are. For a moving bed filter place, you will need to incorporate an air pump and air stone to make the media move in the container.