HI lilman...

You can use CFLs on mothers. 1 - 150 watt CFL (from homedepot/wal mart) per plant will adequately keep your mother alive. These lights give off VERY little heat and consume minimal electricity

It also depends on many clones you are trying to get from each mother in a certain period of time. If yu need dozen adn even hundreds of clones you should consider a 400 watt MH or HPS bulb..

But CFLs will do the trick..

iloveyou