Buuuump. I found a couple doing the nasty and I've eradicated two nests of eggs already. I've heard of assassin snails, but I have ghost shrimp and a nerite snail......
You can try putting a lettuce leaf weighed down, do it at night and then remove it in the morning hopefully they'll be on it just throw it away. I have the same problem with ramshorn snails at the moment but i over feed my elephant nose so that's why i have a lot of them.
Lettuce washed and in my tank weighed down with a fork. Hopefully that'll have most of the little buggers by morning and I'll toss em out the window haha. Thanks to all the advice!