It will work just fine...also,..do not crowd plants. 4 plants will grow decent under a 400.... good luck![]()
The plants will be more stretchy, but they will grow just as well with the HPS bulb as the MH. It's not useless to have a MH, but it's not ideal for young plants and clones... so most people go with fluorescents if they choose something other than HPS for veg. Hope that helps, good luck!
MH unnecessary for first period flowering or not???
or can i use AGRO HPS 400w ???