Help for my nana plant that's struggling.

[starlord]

It seems to me that the leaves are lacking in iron and potassium, which has led to those pinholes and deterioration. That's probably what the snails are after.

[starlord]

I've had good luck with Seachem Iron, it's my go-to. Their Potassium is probably just as good. Since I've got a bigger tank, I've found Potassium glutamate tablets from the pharmacy work well for me, but for most folks, a bottle of Seachem Potassium is the way to go.