You have the bulbs backwards.

MH is for vegetation cycle using 24/7 or 18/6 of light cycle
HPS is for flowering and the light cycle is 12/12. The only time you should use HPS for vegetation cycle is if the bulb is one of the enhanced spectrum bulbs like Hortilux bulbs.

The
Zandor Reviewed by Zandor on . do i use HPS bulb for flowering... MH for budding??? okay im a lil confused..... i got a 1000 watt hps bulb running 18 hours of light and 6 hours of dark.... someone told me this is the flowering stage to get the branches taller bigger bushier.... now when do i switch to the MH bulb and put it in light cycle 12/12 any ideas of do i have my bulbs backwardsa Rating: 5