10 would definitly knock out the population fast, they will eat meaty sinking pellets afterwards. I have a population of about 150 asassins in a 20L of which has no more rams or MTS though there are several large nerites that live with them along with shrimp and some micro crabs
Will these harm shrimp? I got an infestation in my shrimp tank and the snails are hogging the food. If so you could probably write me down for like 3 or 4. Don't need much.
they are safe with shrimp. I tested this theory out by taking a 20 gallon long, added 30 juvi cherry shrimp, then added 200 asassin snails and waited. Now it's 4 months later and I still have 30 adults