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Tap water too soft, when to use Calmag?
vapedboystarted grow question 5y ago
My tap water is too soft (EC <0.1) so I'll use B.A.C. Calmag to adjust the EC to a final result of 0.4
The question is: should I add Calmag and, therefore adjust the EC to 0.4, in all the irrigations? even without adding other nutrients?
Thanks in advance!
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OutForRealanswered grow question 5y ago
Yes you should add cal/mag . I've been told that every water around 0.3 ec was containing enough cal/mag so 0.4 is a good value. Add it with every irrigation even when using no other nutients because it will prevent any deficiency and as you can see the amount you are bringing is not what we can call a high value. When you add other nutrients you can cut the calm/mag IF the others nuts contain some in their formula
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