Superfish Aqua-Flow 50 Filter 150L/H Compact internal filter providing optimal filtration and clean, clear water. Ideal for coldwater and tropical aquariums up to 50 litres. Features an 'Easy-Clean Click system' for easy maintenance. Dual action filter medium with activated carbon removes organic contamination, chemicals and dyes from the water. 100% open structure foam provides optimal filtration and bacterial growth area. Adjustable flow rate (0-100 litres / hour).