It is possible to get good plants from your seeds if you take care of them. Make sure you have good seeds from your bags. Part of the problem with mid grade is with the whole growing process. You could get lucky and get some good genetics. For a gallon of water I wouldnt use more than a 1/4 strengh of what the fert recommends. You can always use more later if needed, but if use too much can burn your plants.