I grew an Ora Valida with a Kessil A360WE in a JBJ28 gal no problem. It was one of the fastest growing Acros in the tank. The Kessil was roughly 8in off the water and never really ran over 65% intensity. The Valida was placed midway in the tank ( Roughly 17-18in from the light) I found it preferred the blue spectrum/Color to keep the brown away along with good water clarity. Also you may want to check with a Red Sea colors test kit or triton. Then add Iron for greens and other trace elements such as KZ component (2) product or Red Sea Colors (D) program. Another thing I found regarding any Purple Acros they don't do to well in ULNS. They prefer higher NO3 So if your tank is ULNS and not dialed in to keep up with depletion of elements you may have a problem there.
May just need more light (for the Valida) or there may be too many nutrients. Usually brown acros are associated with not enough light or too high of nutrients. Not that this totally applies to Valida. Since they seem to change colors quite often or pretty easily. The purples in Valida seems to be the harder color to keep without browning, turning dull or pinkish/opaque. What is your NO3 and NO4 at? How often do you do water changes?
Those numbers are fine. Most corals I've ever received from Unique corals definitely are not the true colors the corals should be ( This is based on all aquacultured I've received from them, not their maricultured or wild- those are a gamble). Seems once they settled in my tank and adjusted they would take off with growth and color up nicely.
Higher light on the red planet brings out the red/pinks. Mid-lower you will get a mix of green in there also. Hardy acro that is a great grower. Secale isn't too common from what I know.
