you would need to incorporate the proper nute to the soilless mix.
Pro-Mix has a soiless mix with Mycorrhizae already in it and works very well for plants. I add worm castings and have great results. You can also purchase it at most grow shops seperately and add it to whatever mix you may be using. Miricle Gro mixes are usually contain time released nutirents which are not recommended for indoor growing...
so honestly it only boils down to space effectiveness and lazyness more or less of either is why u do what u do , i personly started hydro ended in soil. two medical card holder's in house{mom and i},have an all concrete four bedroom basement for our space, so in the end soil was easier and seeminly better, running hydrogen co2 generator{watercooled eliminates 86%of heat) with 13,000 btu ac/dehimidifer, 4 -1000 watt hps for lights in sunsystem reflectors, all vented by can fans, and flower room sealed with 6mill plastic and mylar. and we average 9 to 16 ounces a plant, have 16 strains going so like hawiian sativa will do 12 to 15 ounces at 5 ft were our dutch dragon does right around a pound, so i still do my starts in a ez cloner and run only 1000 watt lights, for me to finish what was originaly and 8 week strain does about 6.5wks with hydro gen and takes under 4 months from start to cut at five ft.! in the end its less head ache to do it soil if u have atomosphere advantage.
