trumpetsnails are useful yes, unfortunately their mutiplying rate has a very bad effect.......
A severe infestation looks somewhat unsightly
true, but not my biggest problem.
MY problem is that
every single one poops ammonia, and also their lifespan is really short.
they grow fast and then they die; an infested tank always shows lots of empty shells.
now ask yourself:
what happened to the occupant?
disintegrated and busted up your waterquality, that's what happened!!
an infested tank often has a
much bigger bioload of snails than of fish, in effect: you're keeping snails with fish as dithers!
the hard shells of the adults and subadults are impossible for almost any fish to cope with, yes, but now their fast growthrate and their short lifespan gives us a handhold on eraditcation:
the baby trumpetsnail.
baby trumpets do not have the sturdy house their elder siblings and parents posess; there are literally DOZENS of fish that can and do eradicate baby MTS!
-the better Botia species: B macracantha, B striata, B sidthimunki, B modesta, B morleti etc
-Puffers (although I'm not fond of them; they die at the drop of a hat when nitrates peak -often happens in a snailbusted tank- and nip other fish)
-Hoplo's and several Doradids eat baby snails! 1-2 days in the week without food will turn adult Kwi-kwi's and several Doradids into agile snailbusters, searching for tiny baby snails. the fact that MTS is nocturnal and pops up after dark works in advantage here.
-Megalodoras! if you have a big tank, THIS is THE fish for you. he even swallows loads of adult MTS digesting them.
-Victorian Haps! several Victorians feed on snails, I've found Labrochromis ishmaeli able to eradicate MTS; this particular species is extinct in the wild, but bred by hobbyists. it's a quite mildmannered fish for Victorian standards and ignores catfish, most of the time.
-Neolamprologus tetracanthus and N tretocephalus make short work of any MTS plague; these are suitable for Tanganyikan or Malawian tanks.