Hello e...
Snails are a good indication of how much you're feeding. If you have a lot of snails, there's a lot of food that's not being eaten. If you gradually reduce the amount you feed and once a week you do a good job of vacuuming the bottom material, you'll remove the food and snail reproduction will slow. Fish don't need much food, they easily go a couple of weeks with it. I feed a little of a variety every other day. When I don't feed the fish forage around their tank looking for uneaten food. This keeps the tank cleaner and the fish get their exercise. Remember, a slightly hungry fish is a healthier fish.
B