Boca Hydro Chelated Iron EDDHA 6%

Premium High-pH Iron Chelate

Boca Hydro Chelated Iron EDDHA 6% is a premium, fully water-soluble micronutrient fertilizer designed to provide highly available iron in alkaline soils, calcareous soils, high-pH growing media, hydroponics, and irrigation systems where conventional iron sources may become unavailable to plants.

Featuring 6% chelated iron this highly stable iron chelate is especially effective for preventing and correcting iron chlorosis under difficult high-pH growing conditions.

Iron is essential for chlorophyll formation, photosynthesis, enzyme activity, and healthy new plant growth. Iron deficiency commonly appears first on young leaves as yellowing between the veins while the veins remain green.

Boca Hydro Iron EDDHA is ideal for citrus, avocado, mango, fruit trees, vegetables, ornamentals, turf, hydroponics, fertigation systems, pots, containers, aquaponics and other crops susceptible to iron deficiency.

6% Chelated Iron Aquaponics Safe High-pH Stability Fully Water Soluble Iron Chlorosis Correction Hydroponics & Fertigation

A powerful iron source for growers who need reliable micronutrient availability in alkaline and high-pH growing conditions.

Product Benefits

High-pH Iron Availability	EDDHA helps maintain iron availability under alkaline and calcareous growing conditions where less stable iron chelates may become ineffective.
Corrects Iron Chlorosis	Designed to prevent and correct interveinal chlorosis and yellowing caused by insufficient plant-available iron.
4.8% Ortho-Ortho EDDHA	Contains a high level of the highly stable ortho-ortho EDDHA isomer for dependable iron availability in difficult growing conditions.
Fully Water Soluble	Dissolves cleanly for use in hydroponics, fertigation, irrigation systems, soil drenches, pots, containers, and concentrated stock solutions.
Supports Healthy Green Growth	Iron supports chlorophyll formation, photosynthesis, enzyme function, and the development of healthy new foliage.

Stock Solution & Measuring Reference

Stock Solution	Dissolve 100 grams Boca Hydro Chelated Iron EDDHA 6% in water and bring to a final volume of 1 gallon.
Stock Concentration	Approximately 26.4 g product per liter and 1,585 ppm elemental iron.
Liquid Concentrate Reference	1 tsp concentrate ≈ 0.13 g dry product 1 tbsp concentrate ≈ 0.39 g dry product 1 fl oz concentrate ≈ 0.78 g dry product
Dry Product Reference	1 tsp dry product ≈ 4.4 grams. Product density can vary, so a digital gram scale is recommended for precise dosing.
Best Accuracy	Use a digital scale for hydroponics, aquaponics, fertigation, and other applications where precise iron concentration is important.

Stock Solution Mixing: Slowly add the EDDHA powder while stirring. Use distilled, purified, or low-mineral water when possible. Mix thoroughly until dissolved and store the concentrate tightly sealed and protected from direct sunlight.

Boca Hydro Chelated Iron EDDHA 6% Dosing PDF

Boca Hydro Chelated Iron EDDHA 6% SDS

Application & Dosing Guide

Foliar Spray	Maintenance / Prevention: 0.25–0.5 g per gallon or approximately 2–4 tsp concentrate Deficiency Correction: 0.75 g per gallon or approximately 2 tbsp concentrate Apply as a fine spray for thorough leaf coverage. A non-ionic surfactant or wetting agent may improve coverage. Apply during cooler parts of the day and avoid spraying heat-stressed or drought-stressed plants.
Pots & Containers	Small Pots / Young Plants: 0.25–0.5 g per gallon or approximately 2–4 tsp concentrate Medium Pots / Established Plants: 0.5–1 g per gallon or approximately 1.25–2.5 tbsp concentrate Large Containers / Large Plants: 1–2 g per gallon or approximately 2.5–5 tbsp concentrate Apply as a root-zone drench to previously moistened growing media. Begin at the lower rate for maintenance and use higher rates for confirmed iron chlorosis.
Soil & Root-Zone Drench	Maintenance / Mild Chlorosis: 2.5–5 g per 5 gallons Moderate Iron Deficiency: 5–10 g per 5 gallons Severe Deficiency / Large Plants: 10–15 g per 5 gallons Apply evenly throughout the active root zone rather than concentrating the entire application directly against the trunk or plant stem. For these higher rates, measuring the dry product directly is easier and more practical than using stock concentrate.
Hydroponics	Seedlings / Light Feeding – 2 ppm Fe: 0.126 g per gallon or approximately 1 tsp / 4.8 mL concentrate General Vegetative & Flowering – 3 ppm Fe: 0.189 g per gallon or approximately 1.5 tsp / 7.2 mL concentrate Deficiency Correction – 4 ppm Fe: 0.252 g per gallon or approximately 2 tsp / 9.6 mL concentrate Severe Deficiency / Short-Term Correction – 5 ppm Fe: 0.315 g per gallon or approximately 2.5 tsp / 11.9 mL concentrate Recommended routine range is approximately 2–3 ppm elemental iron. Account for iron already supplied by your base hydroponic fertilizer before adding supplemental EDDHA.
Fertigation / 1:100 Injector	Target 2 ppm Fe: Dissolve 12.6 g per gallon of injector stock Target 3 ppm Fe: Dissolve 18.9 g per gallon of injector stock Target 4 ppm Fe: Dissolve 25.2 g per gallon of injector stock Target 5 ppm Fe: Dissolve 31.5 g per gallon of injector stock Inject at 1:100. A final concentration of 2–3 ppm Fe is suitable for routine feeding. Higher concentrations are better reserved for corrective applications and should account for iron already present in the fertilizer program.

Aquaponics & Recirculating Systems

50 Gallons	Target 1 ppm Fe: 3.15 g EDDHA 6% Target 2 ppm Fe: 6.31 g EDDHA 6%
100 Gallons	Target 1 ppm Fe: 6.31 g EDDHA 6% Target 2 ppm Fe: 12.62 g EDDHA 6%
1,000 Liters / 264 Gallons	Target 1 ppm Fe: 16.7 g EDDHA 6% Target 2 ppm Fe: 33.3 g EDDHA 6%
Routine Supplementation	Begin by raising the system to approximately 1 ppm elemental iron. Monitor plant response and iron levels before applying additional product.
Confirmed Iron Deficiency	Raise the system to approximately 2 ppm elemental iron, then monitor the system before redosing.
Application Method	Pre-dissolve the required amount in a separate container of system water and gradually add it to a high-flow area or sump for even distribution.
Water Coloration	EDDHA naturally produces a noticeable red, burgundy, tea-colored, or purple tint in water. This is characteristic of the chelate and may persist longer than coloration from DTPA-based iron products.

Aquaponics Tip: EDDHA is especially useful when elevated system pH makes less stable iron chelates difficult to maintain. Test iron levels when possible and account for iron already present from previous supplementation, source water, and other nutrient inputs.

Important: Do not automatically stack repeated doses without monitoring. Allow the system and plants time to respond before applying additional iron.

Understanding Iron Deficiency

Common Symptoms	Iron deficiency typically appears first on younger leaves as yellowing between the leaf veins while the veins remain noticeably greener.
High Soil pH	Plants may experience iron deficiency even when iron is physically present in the soil because alkaline conditions can make conventional forms of iron unavailable for root uptake.
Calcareous Soils	Soils containing high levels of calcium carbonate commonly create conditions where stable iron chelates such as EDDHA are particularly useful.
Other Causes	Iron chlorosis may also be influenced by excessive bicarbonates, poor drainage, root damage, overwatering, or nutrient imbalances. Correcting the underlying root-zone condition improves long-term results.

Guaranteed Analysis

Iron (Fe), Chelated	6.00%
Ortho-Ortho EDDHA Isomer	4.8%
Derived From	Iron EDDHA
CAS Number	16455-61-1

Foliar Application: Root-zone application is generally preferred for long-term correction of iron chlorosis. Foliar feeding should be considered supplemental. Test on a small area before widespread application, especially on sensitive crops. EDDHA may leave temporary reddish coloration or staining on sprayed surfaces.

Compatibility: Always dissolve EDDHA completely before adding additional fertilizer products. Conduct a small compatibility or jar test when combining with unfamiliar fertilizers, pesticides, or other concentrated materials.

Grower Tip: EDDHA is especially valuable for citrus, avocado, mango, fruit trees, ornamentals, vegetables, and other crops growing in alkaline or calcareous soils where iron chlorosis is common.

Storage: Store sealed in a cool, dry place away from direct sunlight. EDDHA can produce strong red or purple coloration and may stain tanks, irrigation components, porous surfaces, clothing, and growing media. Reseal package immediately after use to prevent moisture exposure and clumping.

Boca Hydro Chelated Iron EDDHA 6% Water Soluble Micronutrient Aquaponics Safe