Which snails eat amazon sword plants?

Hi,

I noticed a trend in my planted tank in which my amazon sword seems to be losing leaves, getting holes in the leaves, etc. It's been in my low tech tank for about 2 months now. It is/was a HUGE plant, so not sure if it's normal "melt" from going submersed, transitioning to a low tech tank, or something else. Most of the leaves are beautiful green, but I am losing a leaf or two a week. I noticed snails eating away, and thought maybe some are eating more than I bargained for.

I have pond/bladder snails, MTS, and some of the small ramshorn snails (the small "flat" ones). I have a sizeable MTS population, and only a handful of the others, I'm wondering if any of those could be causing issues. I wanted to get Nerite snails for algae control, but my water is too soft for them. I've assumed these other snails also eat algae, but now I'm worried they are just eating my swords. My moneywort, ludwigia and crypt seem OK , I haven't noticed anything similar there. Thanks!

here's a picture of the sword for reference:

 

Ramshorn and bladder snails will both eat swords ime, the sword in my betta/ramshorn tank looks like swiss cheese, lol. Otherwise it still grows healthy though so I don't worry about it too much.

 

Time to purge some snails from the tank then.... thanks! !

 

It does seem to depend on whether or not they have other food available though, I have ramshorn and bladder in my 40 gallon community and they don't eat the plants at all (which includes 3 big swords) since there's plenty of other food available from feeding the pleco and mystery snails. So I guess plants are the last resort when they aren't being fed enough? Just something to keep in mind.

 

Holes in amazon swords are usually a sign of an iron deficiency. You can put iron fertilizer tabs by its roots, but metal and snails are a terrible mix. So your swords leaves are literally rotting out, and the snails are eating the rotten pieces of the plant.

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It's a dirt tank, I doubt there is iron deficiency. I was under impression MGOCPM would have plenty of iron.

I don't feed the snails. Or try not to anyway. My cory gets just enough. Probably underfeeding actually.

 

Ok, that rules that theory out. The leaves they're eating are green though? And not the least bit yellow?