The Dennerle Osmosis Compact 130 system removes the hardness & the impurities in aquarium water & creates a pure clean environment in fresh & salt water aquariums. Tap water is frequently not suitable for use in aquariums since it can be very hard & contains harmful substances such as chlorine heavy metals & other impurities. An osmosis system is a quick & easy way to ensure clean water. Dennerle Osmosis systems not only soften the water they also remove all impurities such as nitrates phosphates chlorine heavy metals pesticides & herbicides etc. which can damage the aquarium or encourage algae growth. The result is soft water with a high level of purity irrespective of the quality of your local tap water. This clean pure water is the ideal basis for all fresh & sea water aquariums. Using an osmosis system creates a better environment for all aquatic creatures. Fresh water fish such as scalare & angel fish prefer soft water but osmosis water can also be beneficial for creatures which are used to harder water. The osmosis water can be enriched with special mineral salts to create water similar to the natural habitat of such tropical fish as Malawi cichlids. Osmosis systems are essential for salt water aquariums since tap water nearly always contains traces of nitrate phosphate & KH. Tap water with sea salt has an increased KH value which can create a harmful environment for fish & coral. An osmosis system creates the ideal neutral basis for a healthy aquarium. Dennerle systems work on the principle of reverse osmosis. The water mains supply forces the tap water through a special fine pore membrane. Only minute water molecules can pass through the pores. The larger molecules containing harmful substances hardness elements & salts are filtered out. Even bacteria & viruses are removed. The resulting filtered water is very soft & pure (KH value approx. 0.5-2.0). Dennerle osmosis systems are fitted with a fine pore filter & a high-efficiency active carbon filter. The standard fine pore filter removes even the smallest floating particles & prevents the osmosis membrane from clogging. The active carbon filter protects the membrane against aggressive chloride. The precision flow restrictor automatically adjusts & optimises the ratio of osmosis water to residual water (14) to maintain optimum membrane performance over a long period of time. With the aid of osmosis water you can set the water values to match the natural habitat of tropical fish & plants. Osmosis water lets you create the right environment so that even the most sensitive & demanding aquatic creatures will thrive in your aquarium. Easy to use Connect hose to tap Slowly turn tap on The white hose supplies soft pure osmosis water The blue hose drains off the hard impure residual water D