Nah im used 1750 lum 26 watt 2700K for flowering on this grow like 8 of them and it was just a test run i have another grow going its under my sig check it out! I found party cups aren't so good for start to finish but having them in the cups till the 3 or so node then transplanting is the way to go if you wait to long you stunt your plant to much!!!I have some i transplanted a week later on my current grow and you can tell they aren't going to do much and they were badly root bound at time of transplant we'll see. I really like smart pots have a #3 going right now and couldn't be happier and neither could my Green House White Widow!!!! Current grow i will be budding again with 8-12 of the same CFL 2700K bulbs...