HydroActive 1500w Submersible Dirty Water Garden Irrigation Drain Electric Tank Pump 300l/mThis is a brand new stainless steel dirty water pump capable of pumping clean or contaminated water up to 18,000 l hr. Ideal for draining pools, large ponds, stormwater sumps etc. Fitted with a flotation switch it will automatically cut in at around 50cm depth and cut off at around 10 15cm. The outlet is a standard 40mm thread (1. 5 in). (This standard is the inside diameter of the pipe, the threads are actually around 46mm). The supplied outlet