Juwel root backgrounds can be simply cut to size and attached to the rear of the aquarium from within using juwel silicone adhesiver ideally designed to go inbetween two rock backgroundsr aquarium number of backgrounds requiredr rekord 600 x 1r rekord 700 x 1r rio 240 x 2r rio 300 x 2r rio 400 x 3r panorama 200 x 2r vision 260 x 2r vision 450 x 3r trigon 190 x 2r trigon 350 x 3