Skullman420
Well-Known Member
I have a question regarding the PAR 38 bulbs from Mars-Hydro. I have received a little different response from here and there. Some people insist the light spectrum won't work for rooting clones (460nm, 660nm), while others say it works fine. I read some scientific articles claiming the red and blue spectrum used in these bulbs actually improve rooting. I can however not afford to fuck it up so I would love to know if anyone actually successfully rooted clones with these or similar bulbs.