Rafael, Last summer I had a Fracazzanno Nero in a large Sub Irrigated Planter from Walmart that grew beautifully the first year and yielded a dozen fruits. Half way during its second leaf it turned yellow and looked like it started to dry up and began to die on me. I had to cut over two thirds of the trunk in order to keep it alive. THIS MONTH I upon trying to root prune it,  it was clear to me that it was root bound and suffocating in its pot. I was lucky that a major part of the lower portion remained green and even had new shoots. I decided to plant it in the ground.
Recently upon examination of many of Sub Irrigated Planters, I'm not sure that I could keep the trees in there without root pruning yearly. I just moved about 22 trees to in ground despite having no irrigation yet in the hope of not losing them. From observation the fig trees in an Self Watering pot grow much faster and healthier than regular containers but have to be either re potted or pruned sooner than if they were in regular pots.