Looks great now. I don't know anything about roots organics 707 soil, but I'll tell you this: many people get over eager and seem to feel that if they just add a little more fert, that the grow will be the best thing they've ever seen. People do this because they can and the grow shops are all to willing to take your hard earned cash for ferts. I say this, give the soil a chance. Let the plants grow, give nothing but water when the soil dries out, and see how things go. Today's soils are being developed to sustain plant life for several weeks, maybe even the entire grow. It's easy to add more soil later, as you've discovered, or add more fert later if necessary, so let the soil expend itself and see how long it will last. When the leaves go pale green the yellow, chances are they could use a little more fert. but if you add fert to the plant, it will be seem to be impossible to know what to do to fix it. Once the fert goes into the soil when it's not needed, the damage is already done. So give the soil a chance to grow the plants and see how long it will last. When the plants are taller, go ahead with a 1 or 2 gallon buckets, then later move them to 5 gallons. That might be enough soil added over time to keep them growing without adding any more. If you've added ferts already, don't sweat it, just sit back and wait.
