For starts the 6000k LED's are more than enough, so I don't know why you are having issues?
The lights you are referring to as pink (my Roleadros) are heavy on the red side. I don't use them anymore.
The viparspectras I have are adjustable in three light spectrums so to speak. The lights on my seedling table are Viparspectra 450's
I have my red almost all the way off.
Two of these will more than cover my 24"x50" table, (4 trays)
One thing to consider it the spread of light changes when adjusted up and down.
I like these because I can have the lights higher than the tubes and get in there and work on the plants and water more easily.
I do have three Viparspectras 700's in my grow tent.
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