There must be some rule about this

Today I pumped water from the tank into the pool (with our Onga RivaFlow ittybitty pump) … and while J and I were off experiencing Sweeney Todd in Gold Class @ Indro, it seems to have been bucketing down all through.That makes 4 from 4 – whenever I put water back into the pool, it rains heavily. Note that because I don’t wash our car there’s no correlation to be had on that front.Weird. Must be some science-y reason for I’m sure.