So I have had my plants under a 400 watt HPS.. I want to go to 400 watt MH, if I do this will it effect my plants in any negative ways?
a h- your backwards. mh for veg grow, and hps for flower. i do both hpsodium. most go to hps at 12-12 light change.
Lol I know that you are suppose to have MH during veg or both MH and HPS, my question was will it effect it if I change to MH at this point. I changed to 400watt MH and also added a 150watt HPS.Thanks for the reply