Yo yo,
I'v been googling and gooling and googling to try and find out whether it's better for new plants (say, 2-3wks old) to be put under an HPS bub or whether clouday-day sunlight is better.
Now, I understand that sunlight is always better than bulb-light, but the question in this:
How bright does the sunlight have to be before it's better than an HPS bulb?
If it's a cloudy day outside, would the light coming onto the windowsil still be better than an HP bulb, or does it need to be sunny sunlight?
Any answers would be appreciated as I'm struggling to find an answer to this on the net.
Cheers.
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