Vital Earth's PHC BioPakVital Earth's® PHC BioPak is a unique, dry water soluble combination of
natural humic substances, cold water kelp, and a proprietary blend of
beneficial bacteria. Vital Earth's® PHC BioPak is applied to soil as a
drench or spray. It also contains humic acids, sea kelp extract, sugar
and yeast extract that also contribute to improved microbial action in
the soil. This special blend can be applied to soil by spray, drench,
fertigation, or soil injection.