I've been using this line for my last several grows. I can see my plants have been healthy and buds have been good. But, plants and yield I feel are subpar. Simple question, how much has anyone used at each feed? I've been trying to estimate the volume needed per Gallon Pots? Instructions say 4x4 area. ? (Admittedly I'm over 40 n my eyes need extra peepers. Not sure exactly what I'm reading )

Amy ideas ? Suggestions ?

3Gal pots. Been sprinkling about 3 tbs each air bag.