CalMag Deff
BrediniGreenystarted grow question 2y ago
My first Wedding Cake still shows signs of CalMag deff and I don't know why. Already giving her 10 ml BioBizz CalMag to 3,5l water, way more then the recommended amount for deff and adjusted water PH at 6.3. Has anyone got any Ideea?
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All_our_small_plantsanswered grow question 2y ago
Too much CalMag is not good. The elements calcium and magnesium are positively charged cations - just like the particularly important nutrient potassium.
Now, it can happen that these 3 cations block each other’s absorption if they are in the wrong ratio to each other.
For this reason, it is very important not to exceed the maximum dosage of CalMag, as otherwise, the absorption of potassium can be blocked. As a result, you end up with a deficiency that is not a real deficiency, but a nutrient blockage caused by an excess. Measure the pH value and also the EC value of your runoff; it should be between 5.8 and 6.5, and the EC value should not exceed 1.8 to 2.
Newt_Loopanswered grow question 2y ago
It doesn't look to me to be a calmag deficiency.
Looks more like a phosphorus deficiency to me.
Could possibly be a Calcium toxicity also.
With a calcium toxicity they will be more prone to light/heat stress. Will cause phosphorus to fallout.
Can also make it look like there's deficiency in potassium, magnesium, iron, and manganese.
Soil may have alkaline conditions.
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GrowerOGanswered grow question 2y ago
I forgot, now you should flush your plants to unlock her roots from all the nutrients stucked in your soil
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GrowerOGanswered grow question 2y ago
hello mate, you did right giving CalMag but i think the problem is another. When you use organic nutrients you must have a Ca/Mg ratio of 3:1 or 4:1 in your water than you can add whatever you want because normally the brand products are already balanced. If you haven't the right ratio, normally you could have more Ca than Mg in the tap water, you can add Mg salts to balance the ratio.
Good luck and happy harvest!!
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NoVC01answered grow question 2y ago
FLUSH, if you haven't already. Then get your soil right.
What "All_our_small_plants" said makes sense.
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Scrubbyjimbobanswered grow question 2y ago
Check runoff pH. Low rootzone pH is a common cause of Ca deficiency. High potassium can too. Ca also works with phosphorus, so bumping that might help with processing Ca. Too much isn't good either when it comes to CalMag.
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