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Peters Excel21-5-20 Multi-Purpose / No Boron

No boron, moderately acidic formulation is an excellent choice for a general-use fertilizer.

  • base formulation—can be used alone or rotated with a customizing component
  • effective for water types 2, 3 and 4
  • 100% water soluble
  • pure formulation—no ballast substances
  • effective for all water types
  • elevated levels of chelated trace elements ensure robust growth and rich color
  • contains NPK, magnesium and micronutrients
  • developed for peat-based cultures (pot plants, bedding plants and container nursery stock)
  • exclusive M-77 chelating formula for fast, efficient nutrient uptake

Rates for Peters Excel, 21-5-20, Multi-Purpose / No Boron

Weight (in ounces) of product needed to mix one gallon of concentrate

Target Fertilizer Concentration (N/ppm) After DilutionCommon Injector RatiosEC (mmhos/cm) of Target Feed Rate After Dilution
1:151:1001:1281:2001:300
25
50
75
100
125
150
175
200
250
300
350
400
450
500
600

*** Exceeds maximum solubility.

Gallons of water required to dissolve one 25lb. bag of fertilizer

Target Fertilizer Concentration (N/ppm) After DilutionCommon Injector RatiosEC (mmhos/cm) of Target Feed Rate After Dilution
1:151:1001:1281:2001:300
25
50
75
100
125
150
175
200
250
300
350
400
450
500
600

*** Exceeds maximum solubility.