ANY ONE KNOW WHAT THIS COULD BE....

Keeprollinup

Keeprollinup

Well-Known Member
Hi saw this on my leaves it's pretty much on all off them. thanks.
 

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Roger A. Shrubber said:
it is hard to see under the hps, try a pic with normal lights. from what i can see, it doesn't look like calcium deficiency, looks more like septoria. but again, it's very hard to tell under that lighting
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I was thinking septoria but my humidity has always been like 35-40% and never damp ill try take some pics without his later thanks.
 
I had a similar issue but my problem was I went a little heavy on nutes one time while feeding..I watered multiple times without nutes and it fixed them right up.Not saying this is your problem cause yours seems to be a little more severe than me but just figured I'd throw that out there...
 
Keeprollinup said:
Some more picks of the leaves and the plant it's on
View attachment 4239233 View attachment 4239232
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that actually does look like calcium deficiency in the second picture. small rust colored dots that slowly spread into each other if left untreated.
so, what medium are you growing in, what nutes are you using, and what kind of water? tap water is usually good, unless it has very high, or low ppm. around 150 ppm tap water will usually have enough calcium in it that you don't need to add any more. if you're using ro or distilled water, or if your tap water has very low ppm, you might need to add some calcium. the easiest way is to get some cal-mag, but make sure you read the instructions, and adjust the amount of nutes you're using to account for whats in the cal-mag
 
Roger A. Shrubber said:
that actually does look like calcium deficiency in the second picture. small rust colored dots that slowly spread into each other if left untreated.
so, what medium are you growing in, what nutes are you using, and what kind of water? tap water is usually good, unless it has very high, or low ppm. around 150 ppm tap water will usually have enough calcium in it that you don't need to add any more. if you're using ro or distilled water, or if your tap water has very low ppm, you might need to add some calcium. the easiest way is to get some cal-mag, but make sure you read the instructions, and adjust the amount of nutes you're using to account for whats in the cal-mag
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Hi I'm using tap water PH to 6.5 using canna coco A-B using big bud and pk13-14 using all recomended doses and growing in coco. thanks.
 
6.0-6.1 for coco, with an occasional dip to 5.8 and an occasional bump to 6.3 stay in that range and you'll never have ph problems in coco.
big bud is 0-1-3, pk 13-14 is 0-13-14 (obviously), canna coco is 5-4-3 combined........so basically your using 5-21-29........i would say there's not enough room for the plants to absorb calcium. plants absorb ions of nutrients from the salts in your ferts. they don't know or care which ones, and some are much easier to absorb than others. calcium isn't particularly easy for a plant to absorb, so by the time it gets the chance, it's already full. no reason at all to run big bud and pk 13-14 together. they're almost exactly the same thing....pick one and go with it. it would be better to back off a little on your other nutes, and add a small amount of cal mag, than to dump cal mag on top of what you're already feeding. too much calcium can lock out other nutes, and then you get a cascade thing going on, so it would be better to make room for it, than to cram it in anyway.
 
Roger A. Shrubber said:
6.0-6.1 for coco, with an occasional dip to 5.8 and an occasional bump to 6.3 stay in that range and you'll never have ph problems in coco.
big bud is 0-1-3, pk 13-14 is 0-13-14 (obviously), canna coco is 5-4-3 combined........so basically your using 5-21-29........i would say there's not enough room for the plants to absorb calcium. plants absorb ions of nutrients from the salts in your ferts. they don't know or care which ones, and some are much easier to absorb than others. calcium isn't particularly easy for a plant to absorb, so by the time it gets the chance, it's already full. no reason at all to run big bud and pk 13-14 together. they're almost exactly the same thing....pick one and go with it. it would be better to back off a little on your other nutes, and add a small amount of cal mag, than to dump cal mag on top of what you're already feeding. too much calcium can lock out other nutes, and then you get a cascade thing going on, so it would be better to make room for it, than to cram it in anyway.
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Thanks for that info I didn’t know that about the ph in coco.
 
Ok
Roger A. Shrubber said:
6.0-6.1 for coco, with an occasional dip to 5.8 and an occasional bump to 6.3 stay in that range and you'll never have ph problems in coco.
big bud is 0-1-3, pk 13-14 is 0-13-14 (obviously), canna coco is 5-4-3 combined........so basically your using 5-21-29........i would say there's not enough room for the plants to absorb calcium. plants absorb ions of nutrients from the salts in your ferts. they don't know or care which ones, and some are much easier to absorb than others. calcium isn't particularly easy for a plant to absorb, so by the time it gets the chance, it's already full. no reason at all to run big bud and pk 13-14 together. they're almost exactly the same thing....pick one and go with it. it would be better to back off a little on your other nutes, and add a small amount of cal mag, than to dump cal mag on top of what you're already feeding. too much calcium can lock out other nutes, and then you get a cascade thing going on, so it would be better to make room for it, than to cram it in anyway.
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Ok thanks for the advice buddy ill lay off the pk 13-14 And lower my PH thanks for the advice.
 
Roger A. Shrubber said:
6.0-6.1 for coco, with an occasional dip to 5.8 and an occasional bump to 6.3 stay in that range and you'll never have ph problems in coco.
big bud is 0-1-3, pk 13-14 is 0-13-14 (obviously), canna coco is 5-4-3 combined........so basically your using 5-21-29........i would say there's not enough room for the plants to absorb calcium. plants absorb ions of nutrients from the salts in your ferts. they don't know or care which ones, and some are much easier to absorb than others. calcium isn't particularly easy for a plant to absorb, so by the time it gets the chance, it's already full. no reason at all to run big bud and pk 13-14 together. they're almost exactly the same thing....pick one and go with it. it would be better to back off a little on your other nutes, and add a small amount of cal mag, than to dump cal mag on top of what you're already feeding. too much calcium can lock out other nutes, and then you get a cascade thing going on, so it would be better to make room for it, than to cram it in anyway.
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Do you think it's a good idea to flush with just PH water for a few days or more before I start to give cal mag ?
 
no, they don't look like they're over fed to me, so shouldn't be any need to leach, just don't kill them with the cal-mag, start with a little and work up, easier to add more than it is to remove too much
 

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