Rotala stunted growth--deficiency?
While I'm seeing slower than expected growth in my tank overall the plants forming atleast appear healthy. My main concern is my rotala colorata which gets lots of stunted tips. The new leaves appear smaller than usual and the edges of the new leaves are often black and sometimes malformed.
I'm dosing thrive 3x per week and I've been going off of nitrate readings to determine if it appears I need to increase dosing. So far with my dosing 3x per week, my nitrate readings tend to increase throughout the week from 5ppm to 25ppm. I know fish contribute as well but it's the best test I can do to correlate to plant growth.
Does this description of the deficiency raise any concerns perhaps with micro nutrients? Should I increase my dosage of thrive? Or maybe dose extra micros separately? I'll add a picture. There are some tips that exhibit this behavior.