Picked up a bunch of plants today from lfs... wisteria, cabomba, java fern, val contortionist, etc. Looking at tank about an hour after planting I saw 3 snails on the glass. Small as in 1mm. I got 2, but the third fell behind some rocks. I'm sure there's more. Do I keep removing as I find them or leave em? So small I can't make out identifiers to look up what they are.