how big of a space are you using? The space I am using is very small closed off corner in my basement. I am gonna add another light or 2 some where along the way.Ya for those four plants you'll probably need at least 1 43 watt a piece at the beginning (6500k), I used 4 43w's, 4 26w's, 1 46w and 2 24" T8 Warm white's on 1 female, She's bushier than a dutch pussy though