ludwigia palustris melting

[mrtajhya]

Help! I have almost lost all my ludwigia palustris.
The new growth are healthy but the old leaves and steam are melting. The steam turns black and decay completely.

 

[connorlindeman]

Whats your lighting like? Do you have CO2? What ferts do you use?

 

[mrtajhya]

The light is -

Finnex Stingray 2 Aquarium LED Light​

I have CO2
I have organic potting mix with sand on top as substrate
I also dose with all in one fertilizer and iron every week.

 

[Morganna]

Did you recently buy this plant? If so, it could be that the plant was grown out of water, and it is now acclimating to being submerged.
Just a thought.

 

[mrtajhya]

The plant was in bad condition when I bought it. But it’s almost 5 months I have it. Never recovered. Always keeps melting and the top barely survives