There's not much to debate. Really...the more often you change the bulbs the more consistent the spectrum and intensity will be, and we all know how important consistency is. I wonder though, would it be even more beneficial to change out 50% of the bulbs every 6 weeks (each bulb still runs for 12 weeks)? That would be even more consistent. Just a thought...actually just thinking "out loud". :lol:

I want these! I pm'd you!