Help with plants

[nmorash0719]

Hello! We are new to using live plants in our fishtank and were needing advice on how to make our plants look better and stop turning brown.
Nitrates <40 ammonia and nitrites are 0.
We use root tabs monthly and aquarium co-op easy green fertilizer weekly.
We have several fish in there now as well as siamese algae eater, assasin snail, nerite snail, rabbit snail and shrimp.

The plants we have are amazon swords, frogbit, anubias, moss balls, jungle vallisneria, cryptocoryne and Alternanthera Reineckii. The alternanthera is really the only one doing horrible (bare, rotting, not growing). But all of them are turning brown and some are shriveled

 

[Aiken Drum]

How long have you had the plants?

 

[nmorash0719]

amazon swords, anubias, jungle vallisneria, moss balls have been in there for a little over a year

cryptocoryne since jan

Alternanthera Reineckii since April

 

[Coryking]

It looks like diatom algae which is common in planted tanks around 3 months old. It will go away on its own but if you have a tooth brush you can scrub it off. If you do that do a water change after wood to remove the loss pieces. Not many fish do eat diatom algae but I have found freshwater dwarf neon goby to eat it but they are a rareish fish