FYI: Just moved my Red Ludwiga from my 20G to my 40G with the same lightening (2 wpg) on Sunday and the plant has taken off! The only difference between the two tanks is the sea salt added to the 20G for the gobies. I didn't add more than 1 teaspoon per galloon, but the plant DID NOT like it.
I just thought I would post and say that if you are adding salt to your tank and having problems with the ludwiga that may be the problem. No other plants in the tank seem to be so sensitive (moneywart, amazons, aponogen, water lily, etc). :dive:
I just thought I would post and say that if you are adding salt to your tank and having problems with the ludwiga that may be the problem. No other plants in the tank seem to be so sensitive (moneywart, amazons, aponogen, water lily, etc). :dive: