[QUOTE="Wollkopf]Thank you for the offer to ask you. I'dont know if you can help me with this question, but after my first grow with the 1 gal smartpots I saw the roots stoped after nearly the half of the pot height. For this grow I will water them from below or what do you think? Maybe you can visit my actual grow sometime and give me some advice. I'll tag you in.[/QUOTE]
Which half ? if its the bottom half and you weren't watering till run off by top feeding then the bottom could very possibly remained dry thus no incentive for the roots to go there, if you did have run off constantly then you could of potential had a perched watertable which would hinder root growth in that area.
but i presume your talking about the former, as for watering either way work, either top water till you have a bit of run off then let it soak back up that water as the pots rehydrate or bottom feed while allowing the pots to wick up the water.