High calcium low magnesium/Epsom salts

[CustardVape]

I've had my water tested, and it's very hard.

 

Calcium 115.8

Magnesium 5

 

I've been advised I don't need cal/mag because of the high calcium, but need to add Epsom salt. How much should I add, growing in soil?

Edited April 19, 2022 by CustardVape

[Oldbear]

21 minutes ago, CustardVape said:

I've had my water tested, and it's very hard.

 

Calcium 115.8

Magnesium 5

 

I've been advised I don't need cal/mag because of the high calcium, but need to add Epsom salt. How much should I add, growing in soil?

Hi mate, 

I use Cana mono magnesium, it's liquid so much more accurate. 

 

To get to 3:1 Ca:Mg you need to add 0.48ml / litre of water to set you bang on. 

 

Hope that helps 

 

[CustardVape]

@Oldbear mate, that's really helpful. Thank you so much. Love this site

[MonkeyBlazed]

You might as well buy chelated mag.

[J.C]

I'm the same, and like @Oldbear I use Canna Mono. It has definetly helped

[CustardVape]

@Oldbear Sorry to bother you, but I guess that's at every watering?

[Oldbear]

3 hours ago, CustardVape said:

@Oldbear Sorry to bother you, but I guess that's at every watering?

Yes, that ratio is required through the life of the plant 

[Guest]

On 20/04/2022 at 0:37 AM, Oldbear said:

Hi mate, 

I use Cana mono magnesium, it's liquid so much more accurate. 

 

To get to 3:1 Ca:Mg you need to add 0.48ml / litre of water to set you bang on. 

 

Hope that helps 

 

 

Apologies in advance to jump into the thread ...

If my math is correct than I have to use 0.17ml/l of epsom salt or Canna Mono for my Cal:Mag with ratio 32.81:3.96 ?

[Guest]

On 20/04/2022 at 0:37 AM, Oldbear said:

Hi mate, 

I use Cana mono magnesium, it's liquid so much more accurate. 

 

To get to 3:1 Ca:Mg you need to add 0.48ml / litre of water to set you bang on. 

 

Hope that helps 

 

Edited April 21, 2022 by Canna Denfour20
Double post . Sorry