I made the mistake of balking at some particularly unhinged Ukraine/Russia rhetoric offline yesterday and got called a vatnik, a tankie, a Russia lover and I was even suspected of being pro-Israel and apparently a nazbol Aimee Therese follower or something
I'm not even invested in this shit, I just find the insane saber-rattling and warmongering unsettling 
When someone tells you Putler's going to invade Estonia, Poland and Finland for Lebensraum next if he's not stopped in Ukraine, just nod your head solemnly
Do they like septic systems?
Don't think so. But like, you mean leeches that are breeding in an incidental water source, not a pond specifically designed for breeding leeches, yeah?
No it's a pond intended for a septic system to leech into
the confusion came because I think you were looking for "leach", which is more like draining or leaking through a medium
You are correct