Questions about Epsom Salts.

[Renfro]

1 gram per gallon of epsom should provide plenty of mg unless you have coco.

 

[Renfro]

You can sprinkle the top of your soil with the Epsom salts and water it in with your regular nutrient mix.

terrible advise.

 

[SheeshM]

terrible advise.

Is it, sorry. I've heard you can top dress e.s. I'll watch and learn some more

 

[Eugenios]

Thanks for all the replies guys.

 

[twentyeight.threefive]

1 gram per gallon of epsom should provide plenty of mg unless you have coco.

What do you recommend for levels in coco?

 

[buyyouabeer]

1 gram per gallon of epsom should provide plenty of mg unless you have coco.

I thought Ca was the issue with coco. My coco based soil does fine with 1g of Mg as in Jacks 321, but always fight the Ca issues.

 

[Dapper_Dillinger]

Although magnesium cations and sulfate anions are considered secondary type nutrients / minerals, those two minerals are the cause for more plant type nutrient deficiency than most people realize. Like the bones found in every living mammal, nearly 55% of a plants metabolic structure is made from magnesium cations reactions, and sulfate anions are also very important because that mineral is greatly responsible for allowing a plant to uptake all the other nutrients it needs to grow. So Epsom Salt / Magnesium Sulfate should always be included in your growing strategies. But don't ever rely on ca/mg supplements to solve a direct magnesium deficiency because all of them contain 3 parts calcium to 1 part magnesium, which most times won't fix a magnesium deficiency because an overabundance of calcium will lockout a plants a ability to uptake magnesium. So if you have a magnesium deficiency, use only Epsom salt @ 3/4 tsp per gallon, or if you want to add a calcium supplement, use a ca/mg supplement but also add Epsom salt to the mix @ 1/2 tsp per a 3ml ca/mg supplement so the ratio is 3/2, to avoid a magnesium lockouts! And for prevention measures, if you add a 3ml ca/mg supplement and 1/2 tsp of Epsom Salt to every 1 gallon of water or feed from day one till 2 weeks before chop, you won't ever have to deal with a calcium, magnesium, or sulfur deficiency!

This honestly just clarified everything i wondered about calmag and Epsom salt. Thank you for sharing your knowledge with others. I hope its ok for me to copy and paste this in my grow journal for further reference

 

[Nutty sKunK]

Funny you bring that up I’m on my basement floor

What temps are they? You want your roots between 18-22c ideally.

Evening standing them on a block so they are a few inches of the ground will help a lot!

 

[Renfro]

What do you recommend for levels in coco?

See how that works and up it if need be, maybe 1.5 ish, if you get up as far as 2 then I suspect pH is the real issue. Just make sure pH isn't the limiting factor first. Whenever I know I am supplying magnesium and I see a magnesium deficiency then I look at pH. A pH number just a few points too low can cause a magnesium deficiency.

 

[Renfro]

Is it, sorry. I've heard you can top dress e.s. I'll watch and learn some more

I would always dissolve the salt in water and apply it. Top dressing could cause areas of extreme salt concentration.

 

[Renfro]

Keep in mind a balanced feed is the way to go, we don't want to just apply epsom salt lol. The calcium to magnesium ratio is very important in prevent issues.

 

[kovidkough]

this helps decipher mulders chart

 

[Soul Dwella]

So the chance of having a Cal deficiency using tap water is pretty low? Is this true? If currently I feed>water>feed>water could I replace the regular Ph'd water with a Epsom salt water treatment at 3/4 tsp per gallon to keep Mag levels in check? Does Epsom salt fully disolve when shaken?

 

[Soul Dwella]

So the chance of having a Cal deficiency using tap water is pretty low? Is this true? If currently I feed>water>feed>water could I replace the regular Ph'd water with a Epsom salt water treatment at 3/4 tsp per gallon to keep Mag levels in check? Does Epsom salt fully disolve when shaken?

Can anybody answer for me? Please???

 

[Eugenios]

Can anybody answer for me? Please???

Not all tap water is the same. If you're using tap water, don't add calmag unless your plants' deficient in it. Especially in soil. I've been using epsom salts in flowering every watering and they dissolve completely when shaken or stirred with warm water.

 

[Zett66]

So the chance of having a Cal deficiency using tap water is pretty low? Is this true? If currently I feed>water>feed>water could I replace the regular Ph'd water with a Epsom salt water treatment at 3/4 tsp per gallon to keep Mag levels in check? Does Epsom salt fully disolve when shaken?

my tap is around 150ppm and my plants get CalMag deficiencys if Im not adding it.

 

[Soul Dwella]

my tap is around 150ppm and my plants get CalMag deficiencys if Im not adding it.

adding epsom or adding CalMag?

 

[Zett66]

adding epsom or adding CalMag?

CalMag, because they get deficient with both in my environment. But more so on the Cal side...brown dots if I dont add it for a while.

If you grow in soil you can also add oyster shell to your mix, that is one of the best sources for Cal and helps to keep the PH stable

 

[DrKiz]

A low pH will limit mag uptake such that if I know I am providing magnesium and I see a def, I would raise pH before trying to add more mag.

This so much. I like to bump Ph at the end of flower for this reason too.. limit N and increase Mg uptake. At least that's what I read somewhere and it sure hasn't hurt to employ.

 

[twentyeight.threefive]

Can anybody answer for me? Please???

Depends on what you are growing in. I hardly ever hear of calcium deficiencies from soil growers but often from coco growers.

I'm now using Jack's 3-2-1 without any CalMag supplements and I haven't seen any deficiencies, even in coco. My tap water is 38ppm too.