Pearlweed stems breaking

[TooManySnakes]

Has anyone encountered pearl weed breaking off at the end of stem and floating to the top of the tank? I’ve been noticing this recently in my 29g endler setup where the pearlweed has recently taken off. 

Not sure if this is being caused by a nutrient deficiency or is just a self propagating behavior. At the moment, I am running a dimmer nicrew planted+, 25% weekly WC, and Easygreen dosing at 2mL per week (slightly under-dosing). This typically leaves me with between 5-10ppm measurable nitrates before each weekly WC. Thank you for reading through the post! 
 

[FlyingFishKeeper]

Hi, in my experience my pearl weed stems have been fairly brittle, so I'm guessing it's just part of the plant. Given that there isn't any rot at the end of the stems I would guess that it might just be a self propagation behaviour? (Also great carpet, I've been trying to do that in my own planted tank!)