Dymax Clear-Mix is a unique macro-porous synthetic polymer absorbent that removes soluble and insoluble impurities and colouration from water due to the presence of drift wood or feeding. It achieves this at a rate and capacity exceeding 5 times that of any other filtration products in the market. This product controls ammonia; nitrites and nitrates by removing nitrogenous organic waste that would otherwise release these harmful components. Clear-Mix causes minimum impact on trace elements while significantly raises redox; polishes water and achieves optimum clarity. When the product is exhausted the pellets will darken progressively and can be easily renewed by treating with bleach.(instructions included) Clear-Mix is formulated and designed for both freshwater and marine applications. Rinse before use. Filter bag is included in the product. Each 100ml treats 400L for up to 6 months.