CFLs can produce good yields if you use a sufficient amount of them. I have a buddy who grows in a small cabinet with all CFLs and gets reasonably good results. Around 0.75 to 1.0 oz per plant.
bananaslug Reviewed by bananaslug on . CFL vs HPS? whats an estimated difference one would see in final yield, potency & flowering using CFL's as opposed to 600w HPS. Rating: 5