18-18-18 Multi-Purpose with Black Iron

Contains three chelated irons, including black iron—the most effective for growing ornamentals

18

N

18

P2O5

18

K2O

Peters Excel pHLow 18-18-18 Multi-purpose is a versatile, multi-use formulation that provides the nutrition plants need to thrive while effectively managing irrigation water alkalinity.

  • base formulation—can be used alone or rotated with a customizing component

  • no filler substances

  • effective for water types 2,3 and 4

  • elevated levels of chelated trace elements ensure robust growth and rich color

  • contains NPK 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

Concentration (ppm N) fertilizerAverage alkalinity reduction (ppm total alkalinity)
10020
20040
30050
40070

 

 

Mix ratios (non-injector)

Fertilizer + Water (gallons) = Approx. N (ppm)
FertilizerWater (gallons)Approx. N (ppm)
1 tsp. (level)1276
1 tbsp. (level)2414
1 cup (level)25530
1 pound100252

 

 

Product properties

Potential acidity505 lbs. calcium carbonate equivalent per ton
Conductivity (100 ppm N)0.79 mmhos/cm.
Maximum solubility4.3 lbs./gal.

 

 

Weight (oz.) of product needed to mix one gallon of concentrate

Target concentration (N/ppm) after dilutionEC (mmhos/cm.) of target feed rate after dilution
Injector ratios
1:151:1001:1281:2001:300
250.31.92.43.85.60.20
500.63.84.87.511.30.39
750.85.67.211.316.90.59
1001.17.59.615.022.50.79
1251.49.412.018.828.10.98
1501.711.314.422.533.81.18
1752.013.116.826.339.41.38
2002.315.019.230.045.01.57
2502.818.824.037.556.31.97
3003.422.528.845.067.52.36
3503.926.333.652.578.82.75
4004.530.038.460.0EMS3.15
4505.133.843.267.5EMS3.54
5005.637.548.075.0EMS3.94
6006.845.057.6EMSEMS4.72
EMS = exceeds maximum solubility

 

 

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

Target concentration (N/ppm) after dilutionEC (mmhos/cm.) of target feed rate after dilution
Injector ratios
1:151:1001:1281:2001:300
251422.2213.3166.7106.771.10.20
507111.1106.783.353.335.60.39
75474.171.155.635.623.70.59
100355.653.341.726.717.80.79
125284.442.733.321.314.20.98
150237.035.627.817.811.91.18
175203.230.523.815.210.21.38
200177.826.720.813.38.91.57
250142.221.316.710.77.11.97
300118.517.813.98.95.92.36
350101.615.211.97.65.12.75
40088.913.310.46.7EMS3.15
45079.011.99.35.9EMS3.54
50071.110.78.35.3EMS3.94
60059.38.96.9EMSEMS4.72
EMS = exceeds maximum solubility

1
Consult rate tables printed on bag labels.
2
Verify product analysis and rate for plants in your production system (for assistance, contact your regional ICL Territory Manager or for testing, call the ICL Lab at 877-467-8522).
3
Irrigation frequency and volume should be adjusted during the crop production cycle according to crop type, environmental conditions, and desired soluble salt levels.
4
A product trial is recommended before adopting a new fertilizer program or making full-scale changes to standard cultural practices (test several rates on representative plant types).
5
Store in a clean, cool, dry place.

Brand details

This product is part of the Peters Excel pHLow portfolio

The acidifying action of Excel pHLow stabilizes pH levels in all types of growing media.

Learn more about Peters Excel pHLow

Can be used together with

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21-5-20 Multi-Pupose

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Peters Excel pHLow

Contains three chelated irons, including black iron—the most effective for growing ornamentals

15-7-25 High-Mag / High K with Black Iron

15-7-25
See product

Peters Excel pHLow

Contains three chelated irons, including black iron—the most effective for growing ornamentals

19-11-21 Multi-Purpose with Black Iron

19-11-21
See product

Peters Professional

Base formulation for constant, balanced nutrition

13-2-13 Plug and Bedding Plant Special

13-2-13
See product

Peters Excel

Contains three chelated irons, including black iron—the most effective for growing ornamentals

15-5-15 Cal-Mag Special with Black Iron

15-5-15
See product

Peters Excel

Versatile, all-purpose formulation for constant, balanced nutrition in moderately alkaline waters

15-2-20 Pansy / Salvia / Vinca

15-2-20
See product

Peters Excel

Elevated levels of chelated trace elements ensure robust growth and rich color.

21-5-20 Multi-Pupose

21-5-20
See product