The 3P Wall Tank System is a durable, premium quality garden tank for rainwater storage and is a practical alternative to underground rainwater tanks. Large 800 litre capacity Rain-Tank with a small space saving footprint. Tanks are available in 4 finishes: Sandstone, Granite, Green or Black. This water tank system comes with a self-cleaning filter for diverting filtered rainwater sideways into the tank, while leaves and debris continue down the drain. Tank-to-tank connectors are available for multi-tank systems. By clever design each tank can be easily linked to the next using a sturdy 25mm hose between metal threads.