Worth is right -- leave them be. Just stick with your watering and feeding schedule and they should be fine. My grow bag plants always send roots out the bottom of the bags.
This year my husband has some of my leftover plants in 7 gallon grow bags and 5 gallon buckets. With regular watering and weekly feedings of TTF, there is so far no difference between the bucket and bag plants. These are mostly ones that are grafted onto rootstock, and I'm expecting the root systems to go out of control on these!
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