Peters Professional 21-7-7 Acid Special, manufactured by ICL Specialty Fertilizers, is a specially developed fertilizer that contains a high potential acidity to produce and maintain healthy acid loving crops for water types 3 and 4.

Promotes lush vegetation and better blooms with its 21-7-7 npk, secondary micronutrients, and extra iron.

Peters Professional 21-7-7 Acid Special is a easy to use water soluble fertilizer that promotes deep greening of acid-loving plants even where is high alkalinity in water and lowers pH levels in growing media.

Tools Needed

To use Peters Professional 21-7-7 Acid Special, you will need a watering can, backpack sprayer, or injection equipment.

How to Use

• Step 1: Consult rates written on the Peters Professional 21-7-7 Acid Special as ppm N levels and application equipment will vary. To use with non-injector equipment, apply 1 tsp of Peters Professional 21-7-7 Acid Special with 1 gallon of water for a 245 ppm N. For a 368 ppm N with non-injector equipment, use 1 tbsp of product with 2 gallons of water. For a 471 ppm N with non-injector equipment, apply 1 cup of product with 25 gallons of water. For a 25 concentrate solution after dilution with injector equipment, use 0.2 oz. of product for a 1:15 ratio.
• Step 2: Mixing by filling a separate tank mix container with half the amount of water then adding the measured amount of Peters Professional 21-7-7 Acid Special. Lastly, add the remaining half of water and agitate until the solution is well-mixed. Pour into equipment as instructed in its product manual.
• Step 3: Spray the Peters Professional 21-7-7 Acid Special mixture on the top and bottom of plants leaves until wet, but not to the point of runoff.

Where to Use

Peters Professional 21-7-7 Acid Special can be used on acid-loving crops.

When to Use

Peters Professional 21-7-7 Acid Special should be used when you wish to offsets high water alkalinity or lowers pH levels in growing media.

Safety Information

Peters Professional 21-7-7 Acid Special is safe to use around children and pets when applied according to the product label instructions. Always wear the proper personal protective equipment (PPE) when applying this product.

Special Considerations

Peters Professsional 21-7-7 Acid Special may result in forage crops containing levels of Molybdenum (Mo) to become toxic to ruminant animals.