Strange yellow spots

Blex216

Blex216

New Member
Can anyone tell me what's wrong with my plants? New grower
 

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Calcium? Weird to see that this early though..did you spray anything on it? The top looks good. Looks like only the 2 lower big fan leaves have the issue. I'd just keep a watch on it for a few more days, if nothing else happens and nothing gets worse, who knows :p
 
Yeah it's a calcium deficiency. I wouldn't just keep an eye on it though. You need to start supplementing with cal/mag. Do you have any?
 
this could be calcium but from what I've seen it more closely resembles magnesium deficiency. If I'm right, a teaspoon of Epsom salt dissolved in a gallon of water should stop it. or better yet, maybe use some calmag from a hydro store and just follow the directions on back. don't give too much or too often or this will cause problems too. that golden yellow spotting is usually magnesium def.
 
polishpollack said:
this could be calcium but from what I've seen it more closely resembles magnesium deficiency. If I'm right, a teaspoon of Epsom salt dissolved in a gallon of water should stop it. or better yet, maybe use some calmag from a hydro store and just follow the directions on back. don't give too much or too often or this will cause problems too. that golden yellow spotting is usually magnesium def.
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Sorry, that's not a mag def, it's a calcium deficiency....

Epsom salt would help if it were a mag def but not a cal def. Ca/mag will help with either a cal or mag def.
 
Crab Pot said:
Sorry, that's not a mag def, it's a calcium deficiency....

Epsom salt would help if it were a mag def but not a cal def. Ca/mag will help with either a cal or mag def.
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It is extremely hard to overdose on calcium, therefore cal mag would work perfectly, who doesnt want stronger branches (bigger nug)?
 
Resinhound said:
Its not the calcium one has to worry about,its all the extra nitrates that come with it.I agree though looks like calcium,I assume you arent running tap water?
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Agreed, make sure you check the N-P-K of any cal/mag supplement you may use to ensure you aren't accidentally doubling up on any N that's already present in your medium or nutrients.
 
Running some tap water,either diluted or full strength if its quality is good enough is the easiest way to avoid these calcium problems.
 
AllynIndoorFarms said:
Agreed, make sure you check the N-P-K of any cal/mag supplement you may use to ensure you aren't accidentally doubling up on any N that's already present in your medium or nutrients.
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I'm not trying to argue but, I don't think the small amount of nitrogen (often found in cal/mag) is going to do any harm to this plant from looking at the pic. If anything it could use a slight increase in nitrogen.
 
If he is running tap, I'd be hard pressed to say he needs calcium, but if using ro water, it would more likely be the culprit. If he is using tap, I would guess more likely a lockout due to pH or unbalanced nutrients. Good luck!
 
Whats the ph of the water being used on your plants?? Cal issue i think. What type of water are you using tap or ro? If tap whats the tds and have you check the city water report, if ro water are you adding any form of cal or mag?
 
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