I drip my plants 24/7 during flower with GH nutes. Lakewoods recipie actually. During veg....about 10 min/hr, then add 10 min to each week during veg. I adjust this schedule as required...I let the plants tell me if they need more...but that is the general schedule that I follow during veg. Young clones with small roots don't require as much feeding, but as they grow larger, root systems are able to take more waterings.

Hope this helps..