m0useanswered grow question 5 months ago full spectrum is better, flat out, If the bluepruple is all you got, then use it till it dies, or sell it to someone who wants to experiment with LED's, I'm sure they have a better use for something else.
Regarding the Wattage of the lights, manufactures like to lie about it, and give the theoretical number. eg. if you running a light that has 100x 2w led diodes in it, that could have theoretical output of 200W 100x2w=200w, but the diodes are never run at 100%, they would burn out and not last very long. most lights tend to aim for under 25% of the didoes maximum output, 25% of 2w is 0.5w a diode 2wx.025=0.5w, x100 = 50W total for this made up light, however it would be advertised at 200W because people want to see bigger number as bigger means better for the uninformed consumer. Even when a good light with a dimmer is at 100% on the dimmer, the driver is not pushing more then 25% of the total wattage that led diode can handle, this creates a product that will last years.
Look at your driver, it will tell you how much it is pulling from the wall and then you will know what the real wattage it.
If your unaware or this all seems to much post link of where you got your lights from or the manufactures page for the light and the community can help out and look it up for you. even model numbers from the light its self and brand can help.
Good Luck!