Hello folks,
On reading my water report a couple things stuck out -
Calcium - 103 mg/l
Magnesium - 8.57 mg/l
That's a ratio of 12:1, which seems well out of tune with the requirement of growing our favourite plant. It would also explain the severe Mg def I keep seeing.
What is a good ratio of Ca/Mg to use? I've been using a CalMag (0.3 ml/L) additive throughout the grow; is it necessary? Would epsom salts added periodically be better instead?
Any comments welcome, Cheers
On reading my water report a couple things stuck out -
Calcium - 103 mg/l
Magnesium - 8.57 mg/l
That's a ratio of 12:1, which seems well out of tune with the requirement of growing our favourite plant. It would also explain the severe Mg def I keep seeing.
What is a good ratio of Ca/Mg to use? I've been using a CalMag (0.3 ml/L) additive throughout the grow; is it necessary? Would epsom salts added periodically be better instead?
Any comments welcome, Cheers