Epson salt for mag. Deficiency

dhead

Member
Have curling tips , loosing color , and burnt looking spots appearing on the leaves,not the tips,. Thinking mag. Deficiency, any know about the epson salt cure and how much per gal.. Ordered cal/mag but it wont be here for a week, need a quick fix
 

coldkilla

Active Member
Yo, Gotta use that search button bro.. lol

Magnesium (Mg) - Micronutrient and Mobile Element


Magnesium helps supports healthy veins while keeping a healthy leaf production and its structure. Magnesium is significant for chlorophyll-production and enzyme break downs. Magnesium which must be present in relatively large quantities for the plant to survive, but yet not to much to where it will cause the plant to show a toxicity.


Magnesium is one of the easiest deficiencies to tell… the green veins along with the yellowness of the entire surrounding leave is a dead giveaway, but sometimes that’s not always the case here. In case you have one of those where it doesn’t show the green veins, sometimes leaf tips and edges may discolor and curl upward. The growing tips can turn lime green when the deficiency progresses to the top of the plant. The edges will feel like dry and crispy and usually affects the lower leaves in younger plants, then will affect the middle to upper half when it gets older, but It can also happen on older leaves as well. The deficiency will start at the tip then will take over the entire outer left and right sides of the leaves. The inner part will be yellow and or brownish in color, followed by leaves falling without withering. The tips can also twist and turn as well as curving upwards as if you curl your tongues.


Excessive levels of magnesium in your plants will exhibit a buildup of toxic salts that will kill the leaves and lock out other nutrients like Calcium (Ca). Mg can get locked out by having too much Calcium, Chlorine or ammonium in your soil/water.
One of the worst problems a person can have is a magnesium def caused by a ph lockout. By giving it more magnesium to cure the problem when you are thinking you are doing good, but actually you are doing more harm then good. When the plants can’t take in a nutrient because of the ph being off for that element, the plant will not absorb it but it will be in the soil… therefore causing a buildup. A buildup will be noticed by the outer parts of the plant becoming whitish and or a yellowish color. The tips and part way in on the inner leaves will die and feel like glass. Parts affected by Magnesium deficiency are: space between the veins (Interveinal) of older leaves; may begin around interior perimeter of leaf.




Watering with 1 tablespoon Epsom salts/gallon of water. Until you can correct nutrient lockout, try foliar feeding. That way the plants get all the nitrogen and Mg they need. The plants can be foliar feed at ½ teaspoon/quart of Epsom salts (first powdered and dissolved in some hot water). When mixing up soil, use 2 teaspoon dolomite lime per gallon of soil.
If the starting water is above 200 ppm, that is pretty hard water, that will lock out mg with all of the calcium in the water. Either add a 1/4 teaspoon per gallon of epsom salts or lime (both will effectively reduce the lockout or invest into a reverse osmosis water filter.
Mg can get locked-up by too much Ca, Cl or ammonium nitrogen. Don't overdo Mg or you'll lock up other nutrients


 

woodsmaneh!

Well-Known Member
Colkilla is right but most times it's lockup caused by a lack of nitrogen. The mag is still there just can't move without nitrogen.

My advise is to flush with 25% recommended nutrients till you have good run-off. By the time it drys out you will have your cal-mag, great stuff, use at 1/2 recommended dose. YOUR MISSING SOMETHING IN YOUR NUTRIENTS or not giving them enough.
 

imadoofus

Member
reg mag salt doesnt disolve properly, youre better off investing in some calmag. one thing about mag related deficiencies is they are more often than not PH related, as opposed to nutrient.
 

imadoofus

Member
yhea, thats the issue. you want to bump it up to 5.8-6.0. a few degrees from that librium and youll have lock out mag.
try thatfor afewdays,see if you dont notice improved health ;)
 

kaydeezee

Well-Known Member
Old thread but what the he'll ,

I'm seeing a light yellowing if the veins with small red like blotches all along the inner veins of the leave,

Also a pale green colour at mid level of the plant?

This plant in the photo bellow 28days from seed and is in coco/perlite , gh nutes , veg booster , liquid seaweed tonic all ph 5.9 going in with a ec of 1.3
Run off ph is 6.0 to 6.1
Ec runoff is 0.9 1.0

What should I do because my tap water ec is ppm 240 ec 0.5 so calmag product might increase the calcium and lock out mag? Should I just buy some Epsom salts and add 1 tbsp to 1 gal of water with my nutrients as usual? I water every day ,3 plants in 11litre pots get around 1000 ml watering per day under a 400watt hps

I was thinking maybe 1/2 tspoon in 1 litre of water then spray the plant's at lights out every day?
 

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Los Reefersaurus

Well-Known Member
Old thread but what the he'll ,

I'm seeing a light yellowing if the veins with small red like blotches all along the inner veins of the leave,

Also a pale green colour at mid level of the plant?

This plant in the photo bellow 28days from seed and is in coco/perlite , gh nutes , veg booster , liquid seaweed tonic all ph 5.9 going in with a ec of 1.3
Run off ph is 6.0 to 6.1
Ec runoff is 0.9 1.0

What should I do because my tap water ec is ppm 240 ec 0.5 so calmag product might increase the calcium and lock out mag? Should I just buy some Epsom salts and add 1 tbsp to 1 gal of water with my nutrients as usual? I water every day ,3 plants in 11litre pots get around 1000 ml watering per day under a 400watt hps

I was thinking maybe 1/2 tspoon in 1 litre of water then spray the plant's at lights out every day?
What is Calcium deficiency? for 1000 Alex. Probably a lock out situation considering your hard water as you say. GO get some tums calcium carbonate, add I tum to your rez there is 1000mg 's of calcium in a tum.
 

kaydeezee

Well-Known Member
Found a local water report if anyone could break it down to me, the numbers make no sense?
I don't know if my tap water is lacking in something that I might have to add in to compensate for the deficiency? Screenshot_2017-03-27-10-20-39.png Screenshot_2017-03-27-10-20-20.png
 
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