mine has gone a bit mad over the summer and them bullrushes do explode - I though it would be nice to have a few but not about a hundred of them. Also, I have some cheap fish in the pond. please dont chuck in any 3 for a fiver ghost carp for the lols, the eat everything including the spawn of the various things on there that mated in the late winter. Once it calms down , I will cut back the bullrushes massively and dig the ghost carp out. the local park pond might have a few new arrivals- I know its bad vuggum to decant them, but there ones on there already
the hot weather killed off the duckweed when i was in central america but thats no bad things i suppose.