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DWC tripart soft formula - should i add calmag?

jovialcupid9
jovialcupid9started grow question 4 years ago
I'm using tripart soft formula from GHE for my DWC grow with RO water. Should i add calmag? The producer says it shouldn't be added, but I can see that everybody does it.
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Feeding. Schedule
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Fruitgrower
Fruitgroweranswered grow question 4 years ago
No need to add it unless signs occur. I'm not sure why ghe would recommend not to use it, their products must contain it already then🌱👍
jovialcupid9
jovialcupid9answered grow question 4 years ago
if so, why over 70-80% of growers add it? (of course growers who use ghe tripart)
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