The Fluval Touch Control Switch for 8.5 (32 L), 16 (60 L) & 23 US Gal. (87 L) Bentglass Aquarium. It is recommended for the Fluval Vistas (15242, 15245, 15248), the Fluval Vues 23 US Gal. (87 L) (15249, 15279) and the Marina Curve 8.5 US Gal. (32 L), 16 US Gal. (60 L), 23 US Gal. (87 L).