i have read that a lot of people go with a 50-50 ratio with the lights for both stages, plus in nature their getting the full spectrum as well, this is why i went with the dual spectrum hps, but it did not give me the results im looking for but as its a digital hps ballast this means i can get a mh bulb and use that for veg, so thats what ill be doing after harvesting these big plants, then i can compare the growth rate between the mh and the cfls, but the truth is cfls work and i have seen some amazing buds grown under cfls, plus i know they work cuz i used them from day 1, and i still use them to start my plants under as my 400 watt dual spectrum hps giving out 55,000lumins just makes them stretch like crazy, my last sour kush was 5 ft tall and the nodes where over 8 inches apart lower down the plant, but when it was in flower under the hps it started to grow slower and the nodes got closer together giving me a good yield in the end, it seems that hps makes the plants stretch in the first 2 or 3 weeks, after that they tend to stop stretching as much, but if i start plants under the cfls for 2 weeks then put the plants under the hps then i dont get this crazy stretch at all