what you need to find out is what part of the light spectrum those bulbs belong to or the color temp of the bulbs. you really want to run a vegging type bulb when starting clones and seedlings as this typ bulb is on the blue side of the light spectrum and hangs out about 6500k on the temp scale. A flowering bulb is higher on the red side of the spectrum and dips down around 2100k on the temp scale. To make it sweet and simple a bulb labeled as "Daylight" would be what you are looking for. when lit the light as a white brightness to it. "Soft" labeled bulb apear to have almost a yellowish look to them when lit because they are more red spectrum and that is what I believe you have atm but is pure speculation. Time to :jointsmile:
tinytoon Reviewed by tinytoon on . Fluorescent Lighting Question I have 4, 48" "Plant & Aquarium" bulbs 40w 1900-lumens 3" - 12" above my 8 clones. its been just over two weeks and everyone seems fine. I was curious if these bulbs would work out or what to look for in fluorescent lights. Rating: 5