Complete Garden Rainwater Harvesting Systems: combining the Wall Tank(s), Filter Collector, Automatic Garden SteelPump, Pump to Tank Connector, rainwater level Sight Gauge, and Tank to Tank Connectors. Each Wall Tank System. Consists of: Wall Tank(s) dependent on system size (800 litre/tank). Tank to Tank Connector(s) to connect all tanks together. Filter Collector, the class leader filter diverter for UK downpipes. Tank Water Level Gauge. Garden SteelPump with multi-hosetail outlet and carry handle. Tank to Pump Connection Kit. Chosen by irrigation professionals and homeowners alike. Available: System 800, System 1600, System 2400, System 3200, System 4000.