What's killing my snails?
When I started my planted 58 gallon over a year ago, I started getting a huge explosion of snails, mostly ramshorn. I never really minded but then I started to slowly notice fewer ramshorn and then suddenly, MTS starting appearing by the hundreds. Gradually all of the ramshorns disappeared, completely overtaken by MTS. In the last few weeks, I have noticed nothing but hundreds and hundreds of empty snail shells littering the substrate of my aquarium.
I can't find any live snails anywhere and don't know if this huge die-off was caused by water conditions or if fish are eating them. The fish seem an unlikely culprit because the shells are of every imaginable size, some too small to seem worth bothering with.
Right now I'm dealing with a ridiculous amount of diatom algae and a million dead snails and am hoping I don't have two water param issues to deal with...
Phosphate: as high as my test kit will read, at least
Fish: 6 German blue rams, 1 bleheri rainbow, BN pleco, 8 hatchetfish, 5 kuhli loaches
Anybody have any ideas?