This is a very interesting thread! My 40g is overrun with vermatid snails. I’m going to try the coral snow to see if that helps. Could a bumble bee snail go in a tank my size? Also, the last time I went through the tank and crushed them with plier, I had a big nutrient increase. When they die off, will they cause a rise in NO3 and PO4? Don’t mean to highjack but thought these questions were relevant to the thread. Thanks!!!