First to supply: as always top of Amazon - quickly and absolutely undamaged. To filter: Assembly encourages a bit of patience and technical Verschick. Please read with care! Zuesrt instructions: it saves time and nerves. The lines like hoses, plastic tubing, and Saugclips Gehäse even from high-quality plastic, or PVH. Do not worry, everything fits together perfectly. Only patience again and filled j. No smell, but so be it with "Made in Germany" quality. Just a tip Kohlenfilternachfüllung is actually intended for the first Aquriumeinrichtung, then either exchange it for the same or better material for Biology (ceramic rings, for example). Pump, clear after Ventilation is absolutely Geraüschlos. Approximately 5min with me. And dense, is also important. For ratio price / performance, in my opinion, perhaps (and more!) Is the best in its class A filters. In my 160l tank with water chemistry was after two days now top. Oh, I have the bacteria Balls of Aquality (clear on Amazon :)) bought) said: it Beschleünigt all processes dramatically. Conclusion: Anyone looking gündtige and powerful A filters - believe hereby is right choice.