Spots on leaves

Feisty1UR

Well-Known Member
cal-mag is what you need. either that, or increase nutrient strength. lacking nitrogen possibly
 
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bgmike8

Well-Known Member
Calmag is an additive? Why do I need additives if I'm using a 3 part gh nutrients. Shouldn't the call and the mag be in there?
 

Feisty1UR

Well-Known Member
Calmag is an additive? Why do I need additives if I'm using a 3 part gh nutrients. Shouldn't the call and the mag be in there?
I've never used gh. I've only ever used the Canna A+B nutrient range. Check the bottle, and see what it says :confused:
 
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