After installed UAS and ATS my refugium empty no macroalgaes growing, all fade off, probably my UAS and ATS consume nutrient,
but after I start change water frequently its look from my refugium the rock grow macroalgae again slowly while UAS and ATS still growing.
I want to start to focus again growing macroalgae in my refugium for the best light using LED, but still confuse abaut spectrum wavelenght and how many kelvin they need. Now I use mix 6.5k 455nm 620nm,

Anyone know which ones is the best for growing macroalgae in refugium ??
they need mix colors or what ?
It is the same need spectrum like we build light for ATS or UAS ???