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Deficiency?
- Thread starter Camboja
- Start date
Bluey
Well-known member
First things first.
You need to correct your pH inputs to suit your medium.
Your current pH inputs are great for growing in coco which is typically 0.4 lower than for soil. But you are in soil.
So start feeding with a higher pH. Next feed input at 7 and then bring it back down a little to average around 6.65.
Peat is not a great admixture because it has very low pH. Too low for cannabis
Your Mg deficiency is caused by low pH.
You need to correct your pH inputs to suit your medium.
Your current pH inputs are great for growing in coco which is typically 0.4 lower than for soil. But you are in soil.
So start feeding with a higher pH. Next feed input at 7 and then bring it back down a little to average around 6.65.
Peat is not a great admixture because it has very low pH. Too low for cannabis
Your Mg deficiency is caused by low pH.
Gingerbeard
New member
Camboja You said, "Yes, I adjust it, and I’m giving the water at 6.2. I use a mix that we have here in Brazil..." when asked about pH.
Does that mean you are adjusting your nutrient solution to 6.2 pH or does that mean you are giving nutrients to 6.2 pH water?
To the forum. From what I think is the website 'Carolina Soil' is 70% Sphagno Peat + 30% Vermiculite + Limestone. It calls itself a 'soil substrate.' Is that basically what coco is? Something inert for roots to grow in? And do I remember something about growing in peat needing special pH considerations?
Does that mean you are adjusting your nutrient solution to 6.2 pH or does that mean you are giving nutrients to 6.2 pH water?
To the forum. From what I think is the website 'Carolina Soil' is 70% Sphagno Peat + 30% Vermiculite + Limestone. It calls itself a 'soil substrate.' Is that basically what coco is? Something inert for roots to grow in? And do I remember something about growing in peat needing special pH considerations?
Bluey
Well-known member
Peat is very low in pH. Not really suited to cannabis. It appears from what you have noted they have added lime to bring the pH back up. Not inert.
Coco is the husk of the coconut shell. Typically small to medium size chips for cannabis but they also do fibres and dust I think. It can be used on its own with liquid nutes. pH is 6.0 typically.. Its not quite inert on a first grow as it releases P or K from memory around week 3 or 4 and hogs/steals/ binds with magnesium. But its still an exceptional grow medium.
Mag deficiency is typically low pH issues. No coco in that medium so I'd be raising the pH quite a bit. I really know nothing about that soil mix though.
Coco is the husk of the coconut shell. Typically small to medium size chips for cannabis but they also do fibres and dust I think. It can be used on its own with liquid nutes. pH is 6.0 typically.. Its not quite inert on a first grow as it releases P or K from memory around week 3 or 4 and hogs/steals/ binds with magnesium. But its still an exceptional grow medium.
Mag deficiency is typically low pH issues. No coco in that medium so I'd be raising the pH quite a bit. I really know nothing about that soil mix though.