I have the same issue here with my 10 gallon. Came in on a plant I got and BOOM they are everywhere now.
I want to get rid of most but not all as I plan to have a pea puffer tank at the start of the new year.
Will 1 assassin snail help reduce the number enough??
you'll still have to do some work yourself but you will notice a difference within a week.
I have a 55 gal with 2 so I have to think a 10 gal would be good with 1-2