water Lilly

We are looking after daughters pond whilst she is away. we popped in today to feed the fish and found the pond half empty. you can imagine the panic we phoned round for reinforcements to help out.  There dosn't appear to be any obvious reason. since topping it up a little  the water level has stabilised.  They are coming back tonight instead of tomorrow so it will no longer be our responsibility.  This water Lilly takes pride and place.