dont worry the 4x 4ft t5s wiill do the jod these lights in cool blue are good for veg i was using 8 x 5ft 58 watt t5s for the last 2 years with exellent results hear are some picks.keep them about 6 inches from the plants and they will do 8 plants for 4 weeks veg any more and you would need to add some more lights .hope this helps be safe the postman.PS these plants were trained for to go under a scrog so the are lst
postmandave Reviewed by postmandave on . T5 Fluorescents Anybody ever try growing under T5 fluorescent lighting? I Figure I could fit a 4 bar 4foot setup in my clsoet which would work well for heat issues, and they say they put out 5000 lumens per bulb, which I could scrog under and being so close to the plant it would be like using somewhere between 250 and 400watt HPS. Any thoughts? Rating: 5