In several of my stem plants Hygrophila Polysperma, Ludwigia Repens and Rotala Indica and Cambomba Carolina roots seem to be appearing all throughout the stem. I clip them off if I do not like the appearance. All of these plants grow to the surface. Does this indicate some sort of nutrient deficiency or other problem, or is this just something to deal with as part of routine pruning and trimming.

I am running pressurized CO2, color light green with 4dKH water in DC, and using EI. Tank is a 72G bow, 260W of PC lighting 11hrs a day

Thanks

Fred