look at my purple Bacopa salzmannii. you can see that the lower bottom leaves are green. new growth with EI dose make it turn to purple.
most of my plant's color pops out after I give up pps-pro dose and use EI with 50% weekly tap water change.
I use to do 30% RO water change with pps-pro. EI dose is like a migic.
I may post a thread on the DIY sub-forum for how to build the LED fixture if I am not too lazy. LOL
Make sure to stay up with good CO2 and current.
Nice color on the LED Lighting for these 2 species.
I'm sure better color development is possible with different Red LED's mixed together with a few whites and blues mixed in for balance. Basically a 3:1 ratio, red to blue and then anything else to make the lighting not look so hideous.