what is wrong with my house plant?

[knight_47]

I nurtured this plant back to life basically, when I got it it was wilting with only 2 or so half dead leaves. after it gained some strength, I started giving it a diluted solution of fertilizer with a high Nitrogen value, and then later moved up to the recommended dosage. I eventually moved it to a larger pot. But I've noticed that some areas on the leaves are dying away. Could it be nute burn? I only give it a fert solution about once every 2-4 weeks.

[img]https://imgs.knight47.com/users/public/q16090plant%20(Medium)e93.jpg[/img]

[img]https://imgs.knight47.com/users/public/e15669plantw93.jpg[/img]

[knight_47]

any ideas??

[pd]

Hi knight_47
To me the inner markings look like scorch from a chemical of some sort dropping onto the leaf- or sun scorch through water drops and runs.'
Marginal browning is ofter associated with lack of atmospheric moisture, especially with tropicals.