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.

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

Why yes after some research i found this out about the bulbs.

• PHOTOMETRIC CHARACTERISTICS
• Initial Lumens: 1900
• Nominal Initial Lumens per Watt: 47
• Color Temperature: 3100 K
• Color Rendering Index (CRI): 90

General Electric F40PL/AQ/ECO GE Plant & Aquarium T12 - Plant; Terrarium (49893) (6 Pack) at PlumberSurplus.com

there's a more detail description there. I guess it seems like i should be fine using f40PL/AQ/ECO until the flowering phase.