22.09.2017 Available from now on: new sera hoses and accessories Be it an (external) filter, a pump or a CO2 system: all these devices require hoses for connecting them to the aquarium. The new sera hoses are specially developed for aquarium purposes and complete the technical equipment range concerning aquarium filtration. The sera hoses are available in the two colors gray and green as well as in different sizes (internal / external diameter):4 / 6 mm9 / 12 mm12 / 16 mm16 / 22 mm All hoses have an ideal wall thickness and are very flexible. Due to the gray or green color, less light can pass through the hose wall, which reduces algae growth in the hose. According to REACH regulations, the hoses do not contain dangerous plasticizers. Flexible use of the hoses as well as a combination of several hoses is possible due to the matching accessories. The additional accessories comprise: The sera hoses and the accessories were presented to trade visitors for the first time at the Zooevent fair in Kassel on September 23 and 24, 2017. These new products are also available in stores from now on.