From Pat (see the comments)
‘On the 16 March my small pond, 3ft by 2.5f, was smelling and dirty.
So I drained it and found 13 dead frogs and 1 barely alive. I refilled with fresh water.
On the 17 March the pond water was cloudy so I drained the thing again: this time 1 dead frog and 15 live ones. Quite a puzzler as I have lived here for 10 years and not seen anything like this.’
I think it’s time to call in Paul Daniels.
