• Here is a link to the full explanation: https://rollitup.org/t/welcome-back-did-you-try-turning-it-off-and-on-again.1104810/

HPS 400 W Question

MichiganMedGrower

Well-Known Member
400 hps covers a 3’ x 3’ area well. And it penetrates about 18” to 2’ into the canopy at 12” over the plants.

Hope this helps.
 

NanoGadget

Well-Known Member
If you can keep your temps in check, hps is probably the best type of light for a new grower. I prefer LED, but you can't beat the price and reliability of hps for new growers. It just does what it's supposed to with minimal fuss.
 
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