250 w metal halide grades

[oververt2]

was planning on using 250w mh lighting for first few weeks of flower as they are still basically in growth stage and are too small for bigger lighting.

after thast go to a 400w hps.

the guy in the shops gave me three lights for free to try out, 3k 7k and 10k all 250 watts.
my question is when should i use these.
i only grow for myself so dont want to do a large grow using all of them plus a 400 or anything,one at a time.
thanks

 

[bckushinator]

5K - 7K Kelvin: Strong Blue Light
Promotes bushy growth. Ideal for rapid growth phase of plants.
Greatly enhances all-around plant growth when used with super
high output, high pressure sodium or 3K warm metal halide lamps.

4.2K - 4200 Kelvin: Cool white Flourescents
Can be used as supplimental blue lighting when used with a 3K
source.

4K - 4000 Kelvin: Neutral Metal Halide
Best single source for plant growth, producing shorter, bushier
growth than 3700 Kelvin and color rendition. Used in general
plant lighting.

3.7K - 3700 Kelvin: Softer Metal Halide(coated)
This coated lamp is used in general plant lighting and for more
rapid growth than 4000 Kelvin produces.

3K - 3200 Kelvin: Warm Metal Halide
Highest photosynthetically active radiation (PAR) value of all HID
lighting for all phases of plant growth. PAR watts account for the
nutritional value of light and are a direct measure of the light
energy available for photosythesis. ...

i would go with the 7k plus hps until you want to flower then 3 k plus your HPS whenever your goin into flower