Screwfix do some nice orange ones, better than the yellow foam, more comfortable and more effective. I like to hear the birds, including magpies, I don't discriminate, but I use them on noisy windy nights.
Looks to soft and hairy for nigrum to me
Can't see enough to ID
a persicaria , probably a weed
Worrying that anyone might want to 'treat' a pond. 'Treat' always means chemicals and ponds are full of life. or maybe that should read 'were full of life'
all that white on the leaves makes those very feeble plants. Not enough chlorophyll. They need constant supply of water, not too much sun and not too much wind
give them a sad farewell from me in my wildlife haven
Mullein Moth caterpillars, so on mullein, (Verbascum)
that's right Pete