Judging by the number that came out of my pond yesterday, the answer is 'yes'. I was ruthlessly thining out the oxygenating weed 'cos it had taken over the entire pond - the leeches were not impressed with my handiwork at all.Goan ohm turmorra. Modurn medzin be mazin reely. Aven zinna leech orra scarifier an us’ve bin yur vour days. Waddidun du wiv orl them leeches? Ism back in their ponds?