growing autos under MH or HPS? wats best

If you are only going to buy only one light bulb....go with the HPS for the entire process. The reality is that the blue spectrum of the MH is better for the veg cycle and the red spectrum of the HPS is best for the flowering. Also, both can be used simultaneously throughout the entire process for the complete spectrum of light required. As mentioned, if I had to use only one bulb...HPS...just my opinion. Happy growing!

I agree with Ilovebush

i have a 1000 watter switchable dimmable ballast cooltube whole 9 yard setup im interested in from start to go if i do MH for 2 weeks then HPS for last weeks? or just MH or HPS full grow... soo any new answers?

147 views, and all these people grow autos, but noone has any other best suggestions here or input at all? this shits crazy lol

Dude jus go wit the hps the entire crop time. As stated above mh is good for veg an hps is good for flowering. But if ur only gonna use 1 then use the hps

I grew a shitload of autos starting a few months ago looking for a decent strain since we can't grow photos outdoors in AK. I had some under MH to veg and others under the HPS. Eventually all ended up under the HPS. No discernible difference in the end. In my limited experience.

The reason you arent getting any new answers is because you have already been given the best advice possible. Use it and you will succeed!

Start under the metal halide, keep going until you see flowers, 1-2 weeks after you see flowers then make the switch to hps.. if you got the 2 bulbs.