switching lights???

i jus started flowerin on dec.1st... and im usin jus cfls.. at the end of this month i should have my HPS setup.. so my question is if i change from cfls to hps in the middle of flowering does that mess anythin up??? and will it still increase my yield and potency???

you dont want to put the light real close at first or yull burn the leaves,but more light the better any day of the week

very good keep lights far as u can and they make it 100%