The power of Sulfur & Cal-Mag in Hydroponic Solutions

We know that fertilizing your garden with a Ca & Mg supplement will strengthen your plants and ensure that a lush and exuberant green returns to your beauties. However, there is a third element which is extremely important for plants to grow healthier and stronger than ever, and that element is Sulfur.

Sulfur, calcium and magnesium are required in smaller quantities than other macronutrients nutrients and are less likely to be deficient for optimum plant growth. However, calcium, magnesium, and sulfur are very important and often are required as fertilizer or as soil amendments.

I. The Power of Sulfur, Calcium, and Magnesium


Sulfur is one of 17 elements essential for crop growth. Although sulfur is considered a secondary nutrient, it is often called the fourth major nutrient ranking just below nitrogen, phosphorus, and potassium. Sulfur is a super nutrient!

Importance of Sulfur:

  • Sulfur is taken up by plants as the sulfate ion (SO4 -2) and may be retained in this form in plant tissues and cell sap.
  • Much of the sulfate is reduced and used in the formation of amino acids, proteins, and oils; in nitrogen fixation (root nodules); in structural components of protoplasm; and in activation of certain vitamins and enzymes.
  • Sulfur is essential as a structural component of some amino acids found in both plants and animals, thus it is a part of the makeup of every living organism.
  • Chlorophyll formation also is dependent on proper sulfur nutrition
  • Sulfur deficiency on growing crops is often mistaken for nitrogen deficiency.
  • Crops lacking sulfur also may be stunted, thin-stemmed and spindly.
  • The need for sulfur is associated with amounts of nitrogen available to crop plants. This relationship is not surprising since both are components of protein and are associated with chlorophyll formation.


Calcium is an essential nutrient that has varied functions within plants, and is absorbed by plants as the Ca++ ion. Calcium is the predominant positively charged ion on soil particles because it is held more tightly than magnesium (Mg++) and potassium (K+ ).

Importance of Calcium:

  • Maintains strength of cell walls and reduces lodging.
  • Regulates uptake of other elements.
  • Regulates cell sap pH and neutralizes acids produced by plants.
  • Essential for activity of Rhizobium.


Magnesium is absorbed and utilized by plants as the Mg++ ion. Magnesium and nitrogen are the only soil nutrients that are a part of chlorophyll and are also involved in phosphorus metabolism and several plant enzyme systems.

Importance of Magnesium:

  • Magnesium is needed for photosynthesis it is the main element in the chlorophyll molecule.
  • It helps the plant uptake iron and also to move nutrients around the plant.
  • Bloom and boost formulas are usually higher in phosphorus to provide extra energy in the form of ATP, but magnesium orients the ATP molecules so that the phosphate bonds can be cleaved. Magnesium also activates many enzymes that can perform thousands of chemical reactions per second. Therefore, magnesium sulfate can intensify the effect of high-energy phosphates in hydroponic vegetable production.

Magnesium is present in these Boost and Bloom formulas for transmission and fast absorption of essential nutrients.

Flower Enhancer

II. The best option for Hydroponic Systems

In Hydroponics, fertilizers mostly for vegetative stages are formulated to provide Nitrogen, Phosphorus, and Potassium as a primary nutrient for your plants; and in most cases, if you want to add some Cal-Mag in the solution, you have to buy an extra product with high concentration of these elements to boost your plants’ growth and performance. I know this because I am also a grower and I have been trying all kind of nutrients for many years.  However, Companies like Complete Hydroponics have changed the game by making its nutrients with everything included; they have formulated their products with naturally derived N-P-K, balanced levels of Ca&Mg, the powerful Sulfur, and a high concentration of Boron, Zinc, Molybdenum and Manganese.

Compete Hydroponics Nutrients Solutions are formulated with naturally derived Micro and Macro nutrients, high concentrations of Calcium, Magnesium, and Sulfur for maximum performance.

Cal-Mag-Sulf Super Base

III. The best choice for Conventional Gardening / Organic Agriculture

In conventional Gardening, the way how nutrients are absorbed is a bit different. Plant growth and development depend on the combination and concentration of mineral nutrients available in the soil. Plants often face significant challenges in obtaining an adequate supply of these nutrients to meet the demands of basic cellular processes due to their relative immobility. A deficiency of any one of them may result in decreased plant productivity and/or fertility.

For example: The nutrients available in a given soil ultimately depend on the rock from which the soil was made. If the plants grown from this soil die and decay where they have grown then their nutrients are recycled. However, if the plants have been grown for agriculture then they are removed from the area in which they have grown and their nutrients cannot be recycled.

This is one of the main reasons why specialized fertilizers and soil amendments are used for; they replace the lack of nutrients the soil might have lost under certain conditions.

The following are some of the best soil amendments and conditioners you can find:

Soil amendments

Replacement of Plant nutrient in Soil:

This can be done either using manure or compost (which are relatively poor sources of nutrients) or a specialized fertilizer. Specialized fertilizers are usually used to replace nitrogen, phosphorous, sulfur and potassium.

Mineral nutrients are usually obtained from the soil through plant roots, but many factors can affect the efficiency of nutrient acquisition. First, the chemistry and composition of certain soils can make it harder for plants to absorb nutrients. The nutrients may not be available in certain soils, or may be present in forms that the plants cannot use. Soil properties like water content, pH, and compaction may intensify these problems.

For soil compaction, drought, and sterility use these incredible products:

To fix these problems, Complete Gardening LLC, has designed a comprehensive variety of nutrients, specially formulated to provide your soil with the highest quality of nutrients and beneficial bacteria to grow the most beautiful plants you can possibly conceive.

These are some of the products you can find at your local store or in the Online Store

Organic Nutrients

When using fertilizers, make sure you are apply naturally derived formulas such as Complete Hydroponics or Complete Gardening. Stay away from toxic nutrients.



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