Hi
@pseudodiego
Please be aware that Ramshorn snails breed prolifically, which may be just what you want. But, it's not easy to keep their numbers down.
JPC
Yeah I have them in a 300 liters, they do a really good job, as the glass is always spotless, but they indeed breed like crazy. They even almost exterminated my bladder snail population, outcompeting them for the available food. Still when there are too many I just feed them to my father chickens, they're big enough to just be able to spot and pick them easily.
I was thinking about maybe using the bladder snails for this new tank, as they seem to breed at a slower pace. But not sure if they're as good eating algae as the ramshorn. If not I'll go with the ramshorn.