I have some rotala macrandra and mexicana in my 180Gal tank.
Whilst they grow very well, I don't seem to have a way to bring out the deep red colour in them.
I dose very close to EI and my CO2 is at 30ppm.
The lighting is 3 x 150W Metal Halide and the rotalas are close to straight underneath the globes.
How do I best bring out the colour in these plants? In particular, the rotala mexicana is only dull pink
Whilst they grow very well, I don't seem to have a way to bring out the deep red colour in them.
I dose very close to EI and my CO2 is at 30ppm.
The lighting is 3 x 150W Metal Halide and the rotalas are close to straight underneath the globes.
How do I best bring out the colour in these plants? In particular, the rotala mexicana is only dull pink