I can't afford two lights and since my main crop will be SOG having being able to effectively flower with the light is more important to me.
I went to the hardware chain that's in my region all they had was MG potting soil too. Sad. The only ferts they had was MG as well. They had seedling mix though, I was thinking of making a little hole and putting the seedling mix in the bucket with the seed. I hear MG can burn young plants easily so this may be a good idea?
-If you cant afford both lights I would go
HPS, considering its
more effective in both veg and flowering stage, compared to
Mh which is more suited to veg.
-Its ok to go with MG soil, just be sure
not to feed until a month goes by, even then start off
slow, with a small amount of fert
-I don't know about mg ferts as I have never used it, Ive heard bad things,
I would go with some inexpensive ferts on Amazon.com.
-Like dutch masters or spend a little more and get
GH floranova