The focal point of a brochure produced by German aquatics company Sera for the German and international speciality trade, entitled “Glücksbringer”, was a feature on living with biotope aquariums. And the quiz game featured in the brochure gave readers the chance to win a first prize of a ten-day Mediterranean cruise for two worth 5,000 €, as well as a further 500 prizes. The winners were chosen from several thousand entries from all over Europe and the CIS. The first prize went to Jana Pavli?kova from the Czech Republic.