Hello to everyone 
. Let's suppose hardness of water is 180 mg/l calcium carbonate + 20 mg/l magnesium carbonate. I visited this link: https://www.easy-grow.co.uk/amino-acids-hard-water/ where it's stated:
"The best solution for hard water problems is to use a hard water nutrient formula along with an amino acid chelator. The hard water nutrient formula adjusts for the extra minerals in the hard water, and the amino acids keep the minerals soluble and available to the plant.
Amino acids such as glutamic acid, aspartic acid and glycine are intermediate chelators. They attach to the calcium and magnesium ions in hard water, preventing them from reacting with phosphoric acid, thus eliminating the precipitation of insoluble salts. No lime scale is formed. Instead, the calcium and magnesium ions are easily transported into the plant and released where they are needed.
Amino acids also act as biostimulants. For example, glutamic acid stimulates root cells to open calcium ion channels. Calcium is imported into the plant thousands of times faster than through simple diffusion. Calcium not only remains available to the plant, it is taken up by the plant much more efficiently. Since the calcium and magnesium salts of pectic acid, together called “pectin”, is the substance that glues the cell walls together, the plant is greatly strengthened.Water and minerals are taken up more efficiently and the plant cells are protected against pathogen and temperature stress. "
Seems interesting...but I am looking into it and I can't find more info...Some hard to digest articles on researchgate maybe...Anyone who has more information? Could we suppose for example that since calcium's carbonate solubility at water is 15 mg/l per 100 mg --> almost 30 mg/l calcium would be made available to the plants? Thank you.
. Let's suppose hardness of water is 180 mg/l calcium carbonate + 20 mg/l magnesium carbonate. I visited this link: https://www.easy-grow.co.uk/amino-acids-hard-water/ where it's stated: "The best solution for hard water problems is to use a hard water nutrient formula along with an amino acid chelator. The hard water nutrient formula adjusts for the extra minerals in the hard water, and the amino acids keep the minerals soluble and available to the plant.
Amino acids such as glutamic acid, aspartic acid and glycine are intermediate chelators. They attach to the calcium and magnesium ions in hard water, preventing them from reacting with phosphoric acid, thus eliminating the precipitation of insoluble salts. No lime scale is formed. Instead, the calcium and magnesium ions are easily transported into the plant and released where they are needed.
Amino acids also act as biostimulants. For example, glutamic acid stimulates root cells to open calcium ion channels. Calcium is imported into the plant thousands of times faster than through simple diffusion. Calcium not only remains available to the plant, it is taken up by the plant much more efficiently. Since the calcium and magnesium salts of pectic acid, together called “pectin”, is the substance that glues the cell walls together, the plant is greatly strengthened.Water and minerals are taken up more efficiently and the plant cells are protected against pathogen and temperature stress. "
Seems interesting...but I am looking into it and I can't find more info...Some hard to digest articles on researchgate maybe...Anyone who has more information? Could we suppose for example that since calcium's carbonate solubility at water is 15 mg/l per 100 mg --> almost 30 mg/l calcium would be made available to the plants? Thank you.
