J

jaiden

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Jan 10, 2026

#1

Got RS11 clones going in straight Coco on green planet duel fuel nutrient line they're 6 ish weeks old and just transitioned outside to flower a week ago been seeing some rapid growth so thought everything was fine but then this morning when I went to water seen this thinking it's calcium what do y'all think

 

carlosescobar

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Jan 16, 2026

#2

my experience with calcium def is small brown dots , which you seem to have in pic 6 , but those other areas look like they have had some liquid sitting on them . ....ive just looked it up and yes it looks like calcium deficiency. i had the same issues when i tried growing in coco .

 

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J

jaiden

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Jan 16, 2026

#3

carlosescobar said:

my experience with calcium def is small brown dots , which you seem to have in pic 6 , but those other areas look like they have had some liquid sitting on them . ....ive just looked it up and yes it looks like calcium deficiency. i had the same issues when i tried growing in coco .

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Yeah upped the dose on the cal mag and they come good thanks for replying brother

 

ChairmanFester

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Jan 16, 2026

#4

For my logic:
Brown, Spot, Edge- nitrogen
not the whole edge- nitrogen related not nitrogen
fast, necrotic looking- calcium