Quote:
Originally Posted by JoshDunn
You can somehow rig your tank so the first few mm doesn't go into the tank but rather washes the roof and all that. They once clean you start filling the tank. Not sure how but thats what my old man did. Depends on your total rainfall and if you can afford alittle wastage.
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yep, called a first flush diverter, its on the list of things to do.
I think you lose the first few hundred litres