A question from a fellow grower:
I have 3 autos, noe in their 7th week since germination (one white dwarf, one critical and one skunk). For the first 5 weeks I used a 400 w MH lamp, and for the last 2 weeks I was using a 400 w HPS lamp. But 3 nights ago my HPS lamp broke down and I had to switch back to MH lamp.
Do you think I should buy another HPS lamp and go back to using it, or just stick with the MH lamp and finish the harvest with it?