Calcium Deficiency
Calcium is an important nutrient which helps provide structure to the cannabis plant and helps it withstand stress like from heat and can sometimes be difficult to diagnose since calcium deficiencies are often accompanied by magnesium and iron deficiency as well.
Calcium deficiencies most often show up in the following places newer growth and places with an abundance of light more so n the more active growth.
Calcium deficiencies are more likely to appear when a Grower is using filtered or reverse osmisis (RO) water to feed their plants, the amount of calcium found in tap water varies, but some tap water has enough calcium to prevent calcium deficiencies. calcium deficiency is more likely to appear in acidic soil (below 6.2 pH)
Solution For Calcium Deficiency
Your cannabis plant may show signs of a calcium deficiency if the pH at the roots is too high or too low. That is because when the pH of your root zone is off, your cannabis cannot properly absorb calcium through its roots. Therefore the first step is to ensure that you have the correct pH
In soil, calcium is best absorbed by the roots in the 6.2 – 7.0 pH range (in soil, it's generally recommended to keep the pH between 6.0 – 7.0, but calcium specifically tends to be best absorbed above 6.2)
In hydro, calcium is best absorbed by the roots in the 6.2 – 6.5 pH range (in hydro, it's generally recommended to keep the pH between 5.5 – 6.5, but calcium specifically tends to be best absorbed above 6.2)
flush your system with clean, pH'd water that contains a regular dose of cannabis-friendly nutrients adding extra calcium supplement doesn't hurt as it's very and rare to give a cannabis plant too much calcium, however, too much calcium can lock out other nutrients so don't go overboard
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