I just had a Malaysian Trumpet Snail EXPLOSION! Just added an assassin snail to keep the numbers down. Watch out, that's a lot of snail to add to your tank, prepare for an "infestation." Lol
Ditto. I dropped 25 in about a month ago, and now there's hundreds of babies all over the place. They don't exactly hide during daylight hours like the adults either.
There's no way it can be from overfeeding, because up until a week ago, I was doing daily water changes for 3 weeks straight after a mini-cycle (which started about a week before the MTS went in). I was vacuuming detritus off the sand and changing out about 40% of the water every day, and fasting the fish to some extent.
I threw 4 Assassins in there last week (was 5, but one of them had a cracked shell during shipping somehow and wasn't moving). Two are half an inch and two are a quarter inch, so they're considerably smaller than the adult MTS at 1". I've read that Assassins can take down larger snails in groups, but mine don't do that. I see the half inch ones strut right past a half-buried adult MTS and not bat an eye.
Last night I had a power outage and was swapping out my UPS units when the battery from the first drained to 5% and it was the first time I'd seen my tank at night. Wall to wall MTS, haha. The largest Assassin was chilling out on the glass in between a mass of them. Who knows if he managed to eat one, considering they eat about 1 per day... Time will tell I guess.
It doesn't bother me that much, since they tend to stay under the sand for the most part, and the Cory's do a good job of keeping the babies off the surfaces of everything when they go around sifting.