Can't help with flowering info as I'm not at that stage yet and won't be using them for flower, but I have a 2 (55W per bulb 6500K) bulb PL-L that I have my seedlings growing under and they seem to be really loving it. It puts out little heat and keeps the kids warm (77-79 F lights on) but not hot. So far I'm very pleased with it and will be getting more.
rattlingdags Reviewed by rattlingdags on . L type fluorescent tubes Also known as PL-L tubes (a Philips name)...are known as 2G11, 4-pin biax tubes in the lighting industry. I'm not an expert on these lights...but, a lot of CFL, T-5 & T-8 growers are making the switch to these type of fluoros. Below is just some raw info...if you want to reseach it farther. Prices are great, especially for DIY peeps...:thumbsup:...enjoy. 36 or 55 watt Bright Kits Rating: 5