Ludwigia questions

[kaz]

I'm not sure which one I do have and not sure if it is at all a ludwiga but from the pictures I have seen it looks more like ludwigas, question is they are pretty much bunch up in one area but seem to be losing 2-3 leafs a day, is this normal or signs of stress?

dosing mondays and thursdays CSM+B 1/2, Potassium Sulfate 1/4.

my phosphates are 1.0
nitrates 20-30
amm 0.25
nitrite 0
running 2x65w current usa dual daylight fixture about 8 1/2 hrs a day.

possible plants
Ludwigia inclinata
Ludwigia ovalis
Ludwigia glandulosa
Ludwigia palustris

 

[zenkatydid]

do you have co2? i have recently bought ludiwiga repens, one of the easier ones afaik, and it was losing leaves and rotting stems while my co2 was down. when i got it back up again, it perked up and started growing, and stopped losing leaves.

i would guess that your light levels are a little low for the species you've got, and either increasing your light or possibly adding co2 would help.