Biorb 30 combines the look of a traditional fish bowl with the performance of a hi tech aquariumr the 30 litre fish bowl incorporates a clever and easy to change 5 stage filtration system that has been designed to provide maximum benefits to both fish and fish keeperr manufactured from super strong plexiglass acrylic biorb 30 provides fish with safe environment that is approximately ten times more space than a traditional bowlr also concealed in the aquarium lid and only 18 mm thick is the