Does Rotala Tulunadensis gain more color under nitrate limitation or not?

[Dousiii]

I've start to noticed my tulu start to gain intense pink the tip, just trying to understanding what's cause it?
I'm dosing APT 3 with constantly 0ppm of nitrate in the water column, and did ramp up my light last week to 150par at substrate level(was at 120 par ish).
I've see people grow these under 200+par lights and still all greenish.

Trying to get an understanding if it's a nutrient deficiency or not, that I might need to add more fert.

 

[Unexpected]

It will go more pink when limited.

 

[Burr740]

Long as it doesnt stunt youre alright and those arent stunted

 

[Naturescapes_Rocco]

I've start to noticed my tulu start to gain intense pink the tip, just trying to understanding what's cause it?
I'm dosing APT 3 with constantly 0ppm of nitrate in the water column, and did ramp up my light last week to 150par at substrate level(was at 120 par ish).
I've see people grow these under 200+par lights and still all greenish.

Trying to get an understanding if it's a nutrient deficiency or not, that I might need to add more fert.

View attachment 12018

Whoa whoa whoa, I'm gonna need to see a full tank shot... for reasons...