I have a "red flame" sword and it has little stringy white hairs all over its leaves. What could this be? I gave it a 1min dip in Hydrogen peroxide before I put it in my tank.
This could be a white fungus caused by excess food turning moldy, I have had this in my tank when the current of the filter outlet forced the food to floor before my Betta could eat it.
Try to remove as much as possible whilst reducing the food you give and just keep up with maintenance and PWCs and it should starve so to speak.
right, I would say hair algae... is it rough and stringy or mushy?? rough and stringy.... hair algae, do any other plants have it?? I agree it could be from the H2O2 dip.. maybe the other tank had a little...