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Old July 19, 2017   #7
zipcode
Tomatovillian™
 
Join Date: Jun 2010
Location: Romania/Germany , z 4-6
Posts: 1,582
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20-8-8 is really too high N for tomatoes.
What kind of Cal-Mag is that? There are tons of types, some being dolomite, other a mixture of Ca and Mg nitrate. In the latter case, that's also a high source of N.
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