Are your 250s mogul? What bulbs are you using?
You should be able to find a MH bulb that has all/most of the color that you are looking for. My favorite 250W mogul bulb is XM 20k - good look and good growth. Radium 20K is nice too. If double ended, then phoenix 14k.
With any of those bulbs, the PCs probably will not add to much to the color spectrum. If you have a nice MH bulbs, then no supplementation is usually necessary. I bought some reefbrite 48" strips and you seriously can barely tell that they are on with my phoenix 14K, so I sold them.
If you really want some bad-*** actinic supplementation, then URI Super Actinic VHO cannot be beat IMO. Sometimes the old school is better.