Lighting advice please!

Hello,

A 2.5 square feet shelf for vegetative stage (5-10 plants at most, in 1 gallon containers). A 5.5 square feet shelf for flowering (3-7 plants at most, in 3 gallon caontainers). The plants will be forced to flower at a height no more than 10 inches. So the expected plant height at the final stages of flowering is about 20-25 inches.

I plan to use one HID for each shelf. The logical (according to the bills) combinations i can think of are:

1) 150W HPS for both vegetative and flowering stages
2) 150W MH for vegetative, 150W HPS for flowering
3) 150W MH for vegetative, 250W HPS for flowering
4) Why waste money on inefficient MH? HPS is more intense than MH, and has more amount of both the blue and the red spectrum (although the blue light in HPS is low by percent, the actual amount of blue light a plant receives under a 150W HPS is more than that of a 150W MH). Is this true? Or a balanced spectrum, which MH has, is more important?

Thanks.

Somebody say something, because the plants are already in the second vegetative week under fluorescent lights and i plan to replace them with HID tomorrow if possible

you're making it wayyyyyyy more complicated than it is bro. just use an HPS

HPS are good for all, ive always used them just go for the bigger Wattage the better!

Do MHs really stimulate bushier-shorter vegetative growth?

colorfullyben said:

Do MHs really stimulate bushier-shorter vegetative growth?

Click to expand...

Yes they do.