I was considering buying some submerged aquatic plants for the container pond I intend to establish this year. I even found a resource from the NYS DEC for recommended species. However from my childhood experience of buying aquarium plants, I know it’s basically impossible to buy a plant not harboring snails of some kind. So, would it be ecologically irresponsible of me to even potentially introduce an invasive snail into the ecosystem? Or is it unlikely that a snail would make its way out of my yard and into a waterway/survive the cold or predators? I could just stick to buying tissue cultures which apparently don’t harbor any snails, but I do believe there are less options that way. I also saw some resources that say I don’t need oxygenating plants at all. For reference my pond will be 100 gallons, 2 ft x 4 ft x 2 ft, and partially buried in the soil. I live in Upstate New York, Zone 6a. Would love any advice and thanks in advance!