New Grower Help guys unknown deficiency

[A John In Nj]

Calcium moves relatively slowly through the plant (it is a semi-mobile nutrient), which means it tends to "stay put" after it's been given to a leaf.
Because of this, calcium deficiencies tend to show up in newer growth (upper leaves) and middle vegetative growth.

Its more likely to be a Potassium deficiency by taking a closer look at those leaves:

http://www.growweedeasy.com/potassium-deficiency-cannabis

I concur as well....

 

[irishganjafarmer]

Calcium moves relatively slowly through the plant (it is a semi-mobile nutrient), which means it tends to "stay put" after it's been given to a leaf.
Because of this, calcium deficiencies tend to show up in newer growth (upper leaves) and middle vegetative growth.

Its more likely to be a Potasium deficiency by taking a closer look at those leaves:

http://www.growweedeasy.com/potassium-deficiency-cannabis

That's great info thanks!! Thing is them older leaves were affected when they were new or middle leaves and same time I switch from cfl to led

 

[pop22]

That's great info thanks!! Thing is them older leaves were affected when they were new or middle leaves and same time I switch from cfl to led

Switching to LED had nothing to do with it. I've grown over 100 plants across 17 strains and have never had a Cal/Mag deficiency. People are quick to blame LEDs without taking the time to look further into the cause of the deficiency

 

[Anthropolis]

Yeah, ya kinda have to have some CalMag. It's almost not optional lol. Some can get away with their tap water if it has lots of Cal, and there's organic ways like adding in lots of Gypsum rock dust, crushed oyster shells, cooked eggshells, ect. It's easy to add some CalMag in each watering though, I like a product by Humboldt Nutrients called Equilibrium which is organic CalMag.

 

[The Elvis]

I use hps and my plants will eat calmag i think it has to with rudy traits not lamps..

 

[irishganjafarmer]

So it's looking like either cal/mag or potassium? I'll have better pics up when I get home I'm sure it'll be worse anyway just hoping to catch it early as I'm only grow the one!! So she's my everything[emoji22]

 

[irishganjafarmer]

Switching to LED had nothing to do with it. I've grown over 100 plants across 17 strains and have never had a Cal/Mag deficiency. People are quick to blame LEDs without taking the time to look further into the cause of the deficiency

Good advice I've been learning I'm still a noob...only what I read I'd that deficiency is coupled with leds so I learned something new there

 

[Arsenic]

I'm just a noob, just harvesting my first autoflower grow, but I had a very similar problem. I was using soft water (no calcium or magnesium in that).
It only took 48 hours after switching to 8 grain hard water for the plants to respond positively. Sorry no before and after pics. Is your water softened by chance? Here is a harvest photo and cone from one of my finished White Widows. Thanks to this website that I did as well as I did.



PS. 78 grams dry off of that plant

 

[irishganjafarmer]

I'm just a noob, just harvesting my first autoflower grow, but I had a very similar problem. I was using soft water (no calcium or magnesium in that).
It only took 48 hours after switching to 8 grain hard water for the plants to respond positively. Sorry no before and after pics. Is your water softened by chance? Here is a harvest photo and cone from one of my finished White Widows. Thanks to this website that I did as well as I did.

View attachment 444828View attachment 444829

PS. 78 grams dry off of that plant

That could be true buddy I've been giving it distilled water and myself drinking tap!! Yes my baby gets better water than me or so I thought see here in Ireland there fluoride added to water supply so didn't think I could use it

 

[Roark]

You can still use it. They put that poison in all the water. If using distilled def up the calcium.

Bud looks great.