I found a small snail in my 38 gallons guppy tank once/while and i don't know what causes the snail present. I have some hornwort and guppy grass. How to prevent the snail being in the tank? don't tell me remove all the plants
Well when you think of snails in the long term they are very helpful they eat algae if you ever get an algae bloom, they eat dead plants decreasing nitrates and are a treat to your fishes . That doesnt mean all fishes will hunt them down and eat them but it is control. All you can do is control them like add a ram or a puffer or a couple assassin snails or manually remove them.