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Peters Excel pHLow 19-11-21 Multi-Purpose is a versatile, multi-use formulation that provides the nutrition plants need to thrive while effectively managing irrigation water alkalinity.
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Base formulation—can be used alone or rotated with a customizing component
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No filler substances
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Effective for water types 2,3 and 4
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Elevated levels of chelated trace elements ensure robust growth and rich color
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Contains NPK, magnesium and micronutrients
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Developed for peat-based cultures (pot plants, bedding plants, and container nursery stock)
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Exclusive M-77® with black iron chelating formula for fast, efficient nutrient uptake
Concentration (ppm N) fertilizer | Average alkalinity reduction (ppm total alkalinity) |
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100 | 20 |
200 | 40 |
300 | 50 |
400 | 70 |
Mix ratios (non-injector)
Fertilizer + Water (gallons) = Approx. N (ppm)Fertilizer | Water (gallons) | Approx. N (ppm) |
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1 tsp. (level) | 1 | 283 |
1 tbsp. (level) | 2 | 425 |
1 cup (level) | 25 | 544 |
1 pound | 100 | 228 |
Product properties
Potential acidity | 378.71 lbs. calcium carbonate equivalent per ton |
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Conductivity (100 ppm N) | 0.75 mmhos/cm. |
Maximum solubility | 4.5 lbs./gal. |
Weight (oz.) of product needed to mix one gallon of concentrate
Target concentration (N/ppm) after dilution | EC (mmhos/cm.) of target feed rate after dilution | |||||
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Injector ratios | ||||||
1:15 | 1:100 | 1:128 | 1:200 | 1:300 | ||
25 | 0.3 | 1.8 | 2.3 | 3.6 | 5.3 | 0.19 |
50 | 0.5 | 3.6 | 4.6 | 7.1 | 10.7 | 0.38 |
75 | 0.8 | 5.3 | 6.8 | 10.7 | 16.0 | 0.56 |
100 | 1.1 | 7.1 | 9.1 | 14.3 | 21.4 | 0.75 |
125 | 1.3 | 8.9 | 11.4 | 17.8 | 26.7 | 0.94 |
150 | 1.6 | 10.7 | 13.7 | 21.4 | 32.1 | 1.13 |
175 | 1.9 | 12.5 | 16.0 | 24.9 | 37.4 | 1.31 |
200 | 2.1 | 14.3 | 18.2 | 28.5 | 42.8 | 1.50 |
250 | 2.7 | 17.8 | 22.8 | 35.6 | 53.4 | 1.88 |
300 | 3.2 | 21.4 | 27.4 | 42.8 | 64.1 | 2.25 |
350 | 3.7 | 24.9 | 31.9 | 49.9 | EMS | 2.63 |
400 | 4.3 | 28.5 | 36.5 | 57.0 | EMS | 3.00 |
450 | 4.8 | 32.1 | 41.0 | 64.1 | EMS | 3.38 |
500 | 5.3 | 35.6 | 45.6 | 71.3 | EMS | 3.75 |
600 | 6.4 | 42.8 | 54.7 | EMS | EMS | 4.50 |
Gallons of water needed to dissolve one 25 lb. bag of fertilizer
Target concentration (N/ppm) after dilution | EC (mmhos/cm.) of target feed rate after dilution | |||||
---|---|---|---|---|---|---|
Injector ratios | ||||||
1:15 | 1:100 | 1:128 | 1:200 | 1:300 | ||
25 | 1497.1 | 224.6 | 175.4 | 112.3 | 74.9 | 0.19 |
50 | 748.5 | 112.3 | 87.7 | 56.1 | 37.4 | 0.38 |
75 | 499.0 | 74.9 | 58.5 | 37.4 | 25.0 | 0.56 |
100 | 374.3 | 56.1 | 43.9 | 28.1 | 18.7 | 0.75 |
125 | 299.4 | 44.9 | 35.1 | 22.5 | 15.0 | 0.94 |
150 | 249.5 | 37.4 | 29.2 | 18.7 | 12.5 | 1.13 |
175 | 213.9 | 32.1 | 25.1 | 16.0 | 10.7 | 1.31 |
200 | 187.1 | 28.1 | 21.9 | 14.0 | 9.4 | 1.50 |
250 | 149.7 | 22.5 | 17.5 | 11.2 | 7.5 | 1.88 |
300 | 124.8 | 18.7 | 14.6 | 9.4 | 6.2 | 2.25 |
350 | 106.9 | 16.0 | 12.5 | 8.0 | EMS | 2.63 |
400 | 93.6 | 14.0 | 11.0 | 7.0 | EMS | 3.00 |
450 | 83.2 | 12.5 | 9.7 | 6.2 | EMS | 3.38 |
500 | 74.9 | 11.2 | 8.8 | 5.6 | EMS | 3.75 |
600 | 62.4 | 9.4 | 7.3 | EMS | EMS | 4.50 |
Brand details
This product is part of the Peters Excel pHLow portfolio
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The acidifying action of Excel pHLow stabilizes pH levels in all types of growing media.
Learn more about Peters Excel pHLowCan be used together with