On June 2nd 2007 in Łódź Manufactura Center the Aquarium Meeting took place. It was combined with traditional Aquarium Exhibition and every two years aquarium hobbyist meeting. There were some lecturers prepared by all most known Polish aquarium specialists. The main attraction was the special seminary of Heiko Bleher – famous fish explorer and ichthyologist invited by AQUAEL company. He was talking (over 2,5 hours) about natural biotopes of rivers and lakes from all over the world propagating biotope aquarium ideas created just as fish really live in nature. He was talking also about nature conservancy showing that our world is systematically destroyed by greedy people. This lecture was extremely interesting – there were over 200 people from all Poland. After the speech Heiko Bleher was selling his books (with special Author’s dedication and sign), photographed with people and, of course, answered many, many questions.