Red Ludwigia problems

[Buckfins]

I have ( had ) Red Ludwigia in my 55g. It took awhile, bout 4 wks, and it slowly died off. I have many other plants in my tank and they are thriving. What is the problem??

 

[calfishguy]

I have ( had ) Red Ludwigia in my 55g. It took awhile, bout 4 wks, and it slowly died off. I have many other plants in my tank and they are thriving. What is the problem??

We need more info lights ferts co2.