Didn't really know exactly where to post this question but this section seemed to be the most fitting...I have a fairly large pond. Approx 23'x18' and approx 3.5ft deep. My water is usually on the money. Crystal clear and never ever green. I use good bacteria religiously, algaecide, water conditioner and muck pellets. In the winter I also use bacteria from the Arctic that lives in freezing water and doesnt die off in water under 50. My filtration is good for about 10K gallons and my pond is just under 5K gallons. I have a bunch of hyacinths and pond lettuce floating to draw the nutrients from the water. All my fish survived outside during the brutal north Jersey winter so I believe I may be doing something right. My one neighbor lost ALL his fish and another neighbor lost some fish....My question is how much of an impact would putting snails in the pond make? How many of them would I need to make an impact on a pond of that size? Is it worth it? I want to get educated on the complete function of having snails in the first place. I spoke to the guy who cleans my pond every spring and he advised me against the snails. Im not sure if he told me that because it would make his job harder when cleaning or if he was being genuine...Any input is appreciated...thanks in advance