BlueGold® Maxi-CAL™ (21% Available Calcium) - Eden BlueGold®
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BlueGold® Maxi-CAL™ (21% Available Calcium)


BlueGold® Maxi-CAL™ is meant to be used with Apical Testing and our complete Nutrient Lineup, especially BossPhos™. With properly balanced, available Calcium you can expect to see huge fruit and flower sets, disease resistance, and increased yields.

BlueGold® Maxi-CAL™ is 100% Natural and NOP Compliant for Certified Organic Programs (please contact your certifier before use). BlueGold® Maxi-CAL™ is deliverable instant Calcium. It’s set apart from other Calcium sources because it contains a unique negative charged source of CaC03, which results in explosively quick Calcium uptake. Its unique blend of Calcium sources is from NOP Compliant Raw Oceanic Deposits, Plant Saponins, and Carbohydrates that are Trade-Secret Manufactured without high heat, acids, solvents, or harsh chemicals to micronize available levels of CaC03 and preserve the inherent all natural biological strains. By dry weight analysis, Maxi-CAL™ contains over 21% available CaC03 and works extremely quick (*when using BlueGold® Nutrient Systems and proper pH is established) of any plant and strain with immediate plant sap results. The industry has Cal-Mag problems due to improper pH feeding and improper Ca/Mg/P loading in VEG cycles. Calcium does not work without properly balanced or deficient Phosphate and excesses of Potassium, Magnesium, Boron, NO3, Na Sodium, Chlorides, Sulfur, Iron, and/or Aluminum. Calcium is the second most important nutrient in your entire Nutrient lineup. No nutrient processes without sufficient Phosphate – and sufficient Phosphate will not process unless there is sufficient Calcium. We call Phosphate the King of Minerals™, and Calcium the Queen of Minerals™. By establishing the plants in the VEG cycle with huge amounts of available Calcium, Phosphate, Carbon, Silica, and growth Nitrogen you set the plant up to carry these, especially Calcium, over into FLWR cycle for huge fruit and flower sets, reproduction, pest and disease resistance, and high total sugars and immunity levels. Proper nutrient ratios via Root Zone & Foliar feeds will always dictate deliverable balanced nutrients in the plant sap is the key to massive production and the ability to govern susceptibility to pest and disease. Balanced nutrition is water-soluble deliverable nutrition. Caution do not use synthetically enhanced or high Na/Cl/Al/K/Mg/S/Fe/B/N grow media with BlueGold®. By itself, Maxi-CAL™ will not harm ANY plant, floral, strain, biology, system, human, animal, environment, or beneficial (bird, bee, butterfly, earthworm, etc.). Supercharge your grows by optimizing nutrition. BlueGold® Maxi-CAL™ can be used to enhance your current inputs, but it is primarily meant to be used with our nutrient lineup. For ALL plants we recommend BlueGold® Hydro protect them from frost, freeze, and heat. BlueGold® Maxi-CAL™ is 100% American made.

As the manufacturer we offer a limited guarantee restricted to exclusive use with BlueGold® products and systems subject to soil, plant, water excesses when used as directed. Covers postal damages. No warranty. No liability.

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By itself, BlueGold® Maxi-CAL™ will never cause burning when used at the recommended rates. Do NOT combine with pesticides/chemicals/plant cleaners/etc. BlueGold® Maxi-CAL™ magnifies anything it touches and greatly enhances nutrient uptake. All BlueGold® Solutions have the ability to magnify anything they are mixed with or come into contact within the soil, water, or on plant leaf surfaces. Very recent (months prior) or current use of chemicals like fertilizers, herbicides, fungicides, algaecides, bactericides, miticides, pesticides, biocides, fumigants, plant growth regulators, pH Up/Down chemicals, dyes, etc., – all can cause an unfavorable interaction due to the BlueGold® Solution magnifying the strength of said chemical. Strengthened doses of those chemicals can result in direct stress, burning, or death of plants. BlueGold® Solutions by themselves, without chemical interactions, will never cause these issues in any plant or soil (when used as directed)Users must respect BlueGold® labels and manufacture warnings and reduce NPK/synthetic inputs and those with excess Aluminum, Sulfur, Magnesium, Potassium, Na Sodium, Boron, Iron, NO3/NH4, and Chloride by +/- 90%. If by user choice, against our directions/recommendations, to use chemical inputs by combining with BlueGold®, they must be reduced by 90% or more. If you quickly move the pH to 6.4 with the help of pH adjusters, without adjusting inputs, you’re drastically making inputs more available, which results in stressed, burned, or dead plants from too big of a hit from the nutrients that are now available at a much higher % than previously. Especially when all the excess stored up chemicals inputs, flood into the plants at even higher EC/PPM values. Likewise, if you do not adjust inputs while using BlueGold®, as soil/sap pH is driven to 6.4, the same can happen over an extended period depending on soil and watering conditions. We do not advocate mixing BlueGold® with any chemicals or products in element/mineral excess. Best used with non-city or chemically treated water sources. Best if RO, distilled, or rain/spring water is used. BlueGold® works and works very well in all organic situations with no side effects. If you encounter problems in the plants from the chemicals by your choice, then STOP.


Calcium should be applied according to Apical Plant Sap Analysis. Depending on strains and sap test, use the below rates (per 1 gallon) for weekly applications of Maxi-CAL™. For fastest uptake, fertigate then foliar. Due to natural plant saponins, always add Maxi-CAL™ to water to reduce minimal foaming. Mix extremely well before use. Please open slowly. There is approximately 7+ lbs of Calcium 1 gallon at 00-3 micron.

Application rates without proper Apical Testing are guesswork. There are widely prevalent excesses of elements and minerals (primarily Al, S, Fe, NO3/NH4, B, Mg, K, Na, Cl) in the water, soil, and sap, and without a test, we have no way to know the state of the water, soil, and/or sap and therefore cannot make any type of guaranteed recommendation. Inputs should always be based on a balanced input. For example, during Vegetative growth in the sap, you need 46% Calcium, 26% Phosphate, 25% Potassium. During reproductive (flowering/fruiting), you need 30% Calcium, 30% Phosphate, 40% Potassium. These are only 3 examples out of 20+ elements and minerals that need to be balanced with one another. We are required by law to give application rates. The below rates are not guaranteed by Eden Solutions without proper Apical Water, Soil, and Sap Tests. These are standard rates that may need to be repeated multiple times. Everything depends upon growth cycles, strains, water, and grow media. 

      • Zone: 8 – 10 mL per gallon of clean water
      • Foliar: 10 -18 mL per gallon of clean water
      • Zone: 8 – 10 mL per gallon of clean water
      • Foliar: 10 -18 mL per gallon of clean water

Plants require varying watering cycles due to light, humidity, temp. Water as needed – keep soil moisture rate at 27% do not exceed 33% zone. Keep soil/sap pH at 6.35 in FLOWER for best flower/blooms results.


Helpful Hints and Suggestions: For more information please call us on 1-307-275-7010 or email

  • Sometimes there can be slight leaks if the carrier is extra rough with the shipping. If there is a problem with the shipment, please contact us at 1-307-275-7010 or email
  • If you have a big problem with Nutrient Lock-Out due to pH & imbalanced soil/plant sap ratios — or if you’ve recently applied chemical fertilizer or been abundantly applying NPK fertilizers with little to no results, we recommend using BlueGold® Maxi-CAL™ at 90% less the normal rate and work up to the recommended rates above.
  • BlueGold® Solutions gradually move the soil/plant sap pH towards 6.4. At this level of pH, all soil-stored and new nutrients become the most available into the plants. Successful gardening begins and ends with soil/plant sap pH at 6.4. pH below 6.4 will lock-out (9% per each 1/10th pH tick movement): Ca, Mg, K, and available Na Salts. pH above 6.4 will lock-out (9% per each 1/10th pH tick movement): P, S, Si, and all Micronutrients. We’ve created a graphic for visual understanding – view it here
  • The leftover mix is good for 30 days. Store in cool dark place.
  • BlueGold® Maxi-CAL causes extreme root growth, caution with plastic/cloth pots (root bounding increases stress).
  • BlueGold® Maxi-CAL™ can be used with pump-up sprayers, hose-end sprayers (put on 3oz setting), and/or watering pails.
  • Safe to apply in all weather conditions, hot or cold, and before, during, and/or after rain. BlueGold® Maxi-CAL™ has been tested from 15°F to 125°F with no detriment to plants, soil, blooms. The best time to spray is early morning when dew is present.
  • BlueGold® Maxi-CAL™ is not harmful to the skin. If contact occurs, wash afterward to avoid dry skin.


At Eden Solutions, we do not believe in just selling you a BlueGold® Solution. We are a teaching company that believes in providing Amazing Results for real problems that require real solutions. Our goal is the best customer support and products in the industry, and we start by standing behind our products 100%, guaranteed when they are used as directed with recommendations based on proper testing. They are tested and used on our farms exclusively, before yours! Please contact us at 1-307-275-7010 or email anytime. We are happy to receive your call if you have any questions or need help in any way with BlueGold® Solutions or applications. We are here to serve you and go over your current protocols and inputs and help to devise a successful approach to introducing BlueGold® and recommend the best choices.

Additional information
Weight 17 oz
Dimensions 5.37 × 2.25 × 2.25 in

QT, 1/2 gallon, 1 gallon

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