lukio

Well-Known Member
'A teaspoon in a litre' bloody Brit, lol

Aka 20g per gallon to us damned Yanks!

Seems like a lot at first glance but mag sulfate isn't like most salts.

What condition were you correcting with the foliar spray?
Haha! Is that what a teaspoon of stuff weighs?

Does seem a lot, did try a half the first time

A teaspoon as measurement is shit, its true. im not giving you a gallon, though. A litre makes total sense whilst a gallon is an absolute mess (: winds me up that does.

Had a magnesium deficiency. I use cannas calmag supplement but it contains N which is annoying. The Epsom salt foliar's great at stopping mag def and greening up the plants. I also added it to the rez too, first time ever and only about a quarter teaspoon ;) I think a teaspoon per 25 litres in a rez was mentioned but check first.
 

ttystikk

Well-Known Member
Haha! Is that what a teaspoon of stuff weighs?

Does seem a lot, did try a half the first time

A teaspoon as measurement is shit, its true. im not giving you a gallon, though. A litre makes total sense whilst a gallon is an absolute mess (: winds me up that does.

Had a magnesium deficiency. I use cannas calmag supplement but it contains N which is annoying. The Epsom salt foliar's great at stopping mag def and greening up the plants. I also added it to the rez too, first time ever and only about a quarter teaspoon ;) I think a teaspoon per 25 litres in a rez was mentioned but check first.
It's a rate. I don't mix entire gallons, either.

Epsom salt = magnesium sulfate heptahydrate. Hepta means 7, hydrate means water; there's 7 water molecules in every molecule of epsom salt. That makes it weaker than most 'dry' nutrient salts and so I think your ratio is good.

What nutrients do you use? I add epsom salt to my hydroponic mix and I see few of any deficiencies.
 

Madmungo

Well-Known Member
Haha! Is that what a teaspoon of stuff weighs?

Does seem a lot, did try a half the first time

A teaspoon as measurement is shit, its true. im not giving you a gallon, though. A litre makes total sense whilst a gallon is an absolute mess (: winds me up that does.

Had a magnesium deficiency. I use cannas calmag supplement but it contains N which is annoying. The Epsom salt foliar's great at stopping mag def and greening up the plants. I also added it to the rez too, first time ever and only about a quarter teaspoon ;) I think a teaspoon per 25 litres in a rez was mentioned but check first.
A U.S gallon is less than an imperial gallon too!
 

Moflow

Well-Known Member
It's a rate. I don't mix entire gallons, either.

Epsom salt = magnesium sulfate heptahydrate. Hepta means 7, hydrate means water; there's 7 water molecules in every molecule of epsom salt. That makes it weaker than most 'dry' nutrient salts and so I think your ratio is good.

What nutrients do you use? I add epsom salt to my hydroponic mix and I see few of any deficiencies.
Damm Yanks and their 12.009499204287 gallon hats...........
Lol
 

lukio

Well-Known Member
Cheers @ttystikk then why does it seem to take an age to dissolve? It looks just like ketamine. Are other powdered nutes a bitch to mix?

I use the canna coco range, canna coco pro coir too. I re use the coco though and I think that's had something to do with the recent mag def, well that coupled with mag hungry plants. Oh and RO water

@Madmungo boils my blood mate! @Moflow exactly! should of scrapped it :cuss:
 

ttystikk

Well-Known Member
Cheers @ttystikk then why does it seem to take an age to dissolve? It looks just like ketamine. Are other powdered nutes a bitch to mix?

I use the canna coco range, canna coco pro coir too. I re use the coco though and I think that's had something to do with the recent mag def, well that coupled with mag hungry plants. Oh and RO water

@Madmungo boils my blood mate! @Moflow exactly! should of scrapped it :cuss:
Lol that's a mystery to me, too- it's mostly water already but doesn't dissolve quickly? I think it's God playing tricks on us!

Use hot water and it dissolves much more quickly, like in your bath.

Cal-mag was developed expressly to help address the affinity coco has for calcium and magnesium.

The substrate I used, 'Tupur Royal Gold', is part coco. It doesn't seem to have so many issues. I can address them more directly with calcium nitrate and epsom salt.

I'm glad to hear that epsom salt foliar spray is effective. I may have to give it a try to see how it works...
 
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