Not sure what this is...

[camille1585]

I don't think S/H is the culprit here, and personally I think that the pots are already on the large side as it is (though size doesn't matter in S/H). I'm not sure that Kosta understands what S/H is. I agree with his comments, but only if the plants were potted in the traditional way in a bark mix. You don't want S/H to be more airy and dry out faster, or else there's limited wicking, and the pellets must stay moist.