Your tank looks like a candy store. Awesome stuff.
When I grew Red Ogo in my refugium and eat it as a people food, I knew I was hooked on macro in my marine tanks. One of my product lines will be Gracilaria Parvispora, Tang Heaven Red as a people food is in the works. The Texas Agriculture Department is looking at my permit to sell people food. We are not in sync on the definition of organic. I consider ammonia to be organic, so does the Mariculture Department for the state of Hawaii. We shall see. I am presently growing it in a 150G Rubbermaid tank. With a 60% shade cloth over greenhouse, the daytime PAR values are in excess of 800.
I can grow it fast. I am considering more shade cloth. The intense sun colors the macro yellow orange instead of dark burgundy.