Well, since my LFS doesn't get any shipments of dwarf plecos of any sort, i've decided to look into getting a couple of snails. BUT, i have live plants, and do intent on keeping them . Is there a snail that won't eat the plants but just the algae on the walls?
i had three in my 29, but i was trying to breed them... but the biggest one ate one of the others, so now i have two in there, and its all good. you could probably do more than one in a 30.