Calmag and ppm in coco

[Sour D]

One of the things I've found frustrating with a number of grow articles etc is they talk about calmag deficiency but never get to the details. If I start out mixing calmag in my water, what should the ppm be? And to break it down more-- for veg + for bloom?

 

[Saro01]

Are you using distilled or Ro water?

 

[Sour D]

RO

 

[Saro01]

RO

200-300 ppm is the norm as far as I am concerned. Others may weigh in on this. I recommend always adding the cal mag first, then other nutes. As it acts as a buffer.

 

[Sour D]

Thanks! That could explain a few things. The liquid calmag I was using came out at 160. The dry Blue Planet I just started using came to 240. I switched to BP cause it says it has manganese which the plants were exhibiting a deficiency of.

 

[Proph]

There are too many variables at play for me to be able to give a general answer.. I mean, who says you even need to be adding cal/mag? What nutrient line are you using?

 

[Sqwirlman]

I am running my first coco grow with mega crop and I am using their cal mag at 1.8 grams per gallon which is 300 ppm. So far so good no deficiencies. Week 4 from sprout starts tomorrow.

 

[Sour D]

I've just heard tha

There are too many variables at play for me to be able to give a general answer.. I mean, who says you even need to be adding cal/mag? What nutrient line are you using?

I've just always heard you need to add extra calmag in coco.
In both grows I had the issue I had used Green Planet Medi One and then GP3
What's flumoxed me is everything went well until the last weeks of blooming

 

[Sqwirlman]

Adding extra cal mag to coco has to do with the CEC of coco. The cal mag helps regulate it. I found a lot of good information about coco coir on https://www.cocoforcannabis.com/. This site does a great job explaining CEC and how high frequency fertigation works.

 

[Sour D]

Adding extra cal mag to coco has to do with the CEC of coco. The cal mag helps regulate it. I found a lot of good information about coco coir on https://www.cocoforcannabis.com/. This site does a great job explaining CEC and how high frequency fertigation works.

There's something about the guy that drives me CRAZY! He runs you around in circles and keeps repeating himself. You follow these links and it's like "I already read this"