I was looking for an alternative to the Malaysian Trumpet Snail as I did not want to be overrun with snails. The Lava Snail AKA Black Devil Spike Snail is larger, but from what I understand is similar to Nerite Snails in which it can only reproduce in brackish water. However, what I don't know is how are they with plants. I have an Amazon Sword, a few Crypts and Vallisneria. I am looking to get 1 maybe 2 for my 75 gallon to stir up the sand.