I have a low tech tank (no CO2 and medium light), I have several low tech plants in this tank (the list at the bottom of this post), the only plant that is not doing good is the 'Nymphoides Hydrophylla (Taiwan Lotus)', after a while the leaves' color changes to yellow and melt from the leave border onward, I usually cut out those leaves after a while
Don't know exactly what is happening with this specific plant, the last time I got this plant it was shaded by other bushy plants and I thought that this was the issue but now nothing is shading it plus all the other plants are doing great, any clues?
The list of plants are:
The leaf highlighted by the red circle is an example of the problem:

Don't know exactly what is happening with this specific plant, the last time I got this plant it was shaded by other bushy plants and I thought that this was the issue but now nothing is shading it plus all the other plants are doing great, any clues?
The list of plants are:
- Limnophila Sessiliflora
- Cryptocoryne Wendtii Brown
- Hygrophila Polysperma Sunset
- Hygrophila Polysperma
- Hygrophila Difformis
- Echinodorus Grisebachii (Amazon Sword)
- Bucephalandra Godzilla
The leaf highlighted by the red circle is an example of the problem:
