I got some phyto - feast to feed my cope culture with and thought I would start a phyto culture with it. now I know that phyto - feast isn't the best starter due to strain competition, but my lfs sells literally only this brand of phyto. Will they grow ok on raw sunlight? I don't have leds or space to spare so I rinsed out a vase and hooked it to an airline on the windowsill, not sure if this will suffice or do I need an actual grow light.