My Big Leech

I collected some weeds while fishing and took a bucket of plants and critters from a near by lake. First there were too many snails, then too many suds now I have so many leeches. I have done one water change in about 6 months, and I just top up the water by siphoning the junk from the bottom of my newts tank. I only wanted to breed suds but honestly I just love my little eco system now.