who make it ?
and what do it contain ? need more info please .. and pointers ? what do you want to know about it ?
I use either Light mix or All mix from Plagron, both with about 30% perlit in it..
if I use light mix, its only for seedlings as its .. well .. light = low on nutrients ..
so you don't burn your small baybies as small plants dont need much ..
if I use All mix I "delude" it with about 30% coco fibers for seedlings or use it when I repot in to bigger pots from cups ..
in general if you use a "normal" soil you wont need to feed the plants wile they are small 2-4 weeks as the soil contains enough for small plants ..