My Grow Minerals ½ Gal Concentrate makes 256 gallons of application mix.

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Directions For Use

Mixing Rate:
Plant Growing & Foliar Feeding Mixture:
7.5ml per gallon of water

Application Rate:
Food Crops & Medicinal Herbs:
Apply growing mixture to your reservoir weekly if using inorganic (stone or clay) growing medium or apply every two weeks if using organic (coir or soil) growing medium.

Photoperiod Sensitive Plants:
During 18 hour daylight cycle apply the same rate as Food Crops. Stop applying 2 weeks after light changes to 12 hours or less per day.

Foliar Feeding:
Use in combination with root feeding. Apply weekly with pump sprayer to the top and undersides of leaves.