I use two 20w T12s to root my clones and germinate seeds.

40watts

11,700 Kelvin

1,950 Lumens
GROWxMOREx420 Reviewed by GROWxMOREx420 on . how much cfl should i use for clone's hello everyone:) i'm getting ready to try my first cloning. does it matter how many cfl i use for fresh clone's? i heard to much lighting can hurt or is my source retarted? lol.. basically whats a ideal wattage should i use for about 4 cuttings? the room is 2' wide by 42'' long and 8' high.. thanks fasts102376... Rating: 5