Hydrorock Australia: distributor for sustainable drainage products in Australia and New Zealand. Based at the Sunshine Coast in Queensland. Hydrorock offers an innovative range of natural water management products. It is an affordable, easy to install, eco-friendly solution suitable for domestic use through to large precinct scale applications.Hydrorock's infiltration products are made from lightweight stone wool, a 100% natural fibre. The blocks are placed underground to intercept, store and slowly release excess roofwater, stormwater and groundwater. It improves drainage, helps prevent flooding and reduces water wastage.