it is wise

it is wise to use cfl grow lights and HID lights at the same time?for example i want use MH + CFL 6400WHITE SPECTRUM FOR VEGI and CFL with HPS for flowerng.

I Dont think it would do any harm, if fact I know it dosnt as Ive done it myself. but you might find it more beneficial depending on how crowded your plants are to place the CFLs down low or in among the lower branches where the extra light down there would help to increase the yield from the lower branches that are normally struggling for light and usually only produce popcorn fluffy bud. Just my opinion, good luck.