I didn’t in the end. But having bought the meter I must do so shortly!
Shame :(
But......with the weather getting warmer, summer on the way, water levels will be dropping :)
I've been trying to get in there for a few years now, missed out on one trip due to work, and haven't managed since :(
If anyone's planning a trip this year feel free to invite me, it's the one place I really need to see ::)