I always thought this was one of the "easy" plants, but I've never had good luck with it. All the L. repens I've ever had ends up with ratty leaves that constantly come off the plant. The stems also fall apart after awhile. I have no problems with other plants like glosso, etc., but the L. repens just always looks bad.
I have it in my 10-gallon tank with 3.6wpg and pressurized CO2, as well as my 5-gallon with 3.6wpg and it looks unhealthy in both tanks.
Does anyone know what the problem may be? All my other plants are healthy and thriving... lots of pearling going on in my 10-gallon.