In the category "WIO" in our online shop a very divers and carefully selected product range of specially designed products to fit the needs of a biotope aquarium, is to be found. The recreation of a delta according to the model of the Amazon rain forest, a riverbed in the Everglades or just the combination of various substrates with hardscape. WIO covers a huge range of creative possibilities. Sands in white to golden yellow or even pitch black, stones in various sizes and colourations and variations. Whether design options for a biotope aquarium or a substrate for aquascaping - The manufacturer WIO offers numerous options for designing the foundation on which the aquascape grows and thrives. We attach great importance to high quality and diversity in our range, and with WIO we offer a wide variety of articles on the subject of biotope aquariums.