MisterWhilom
Active Member
I have some Kali Mist seedlings about 3 weeks old in my DWC cloner, and they've started developing some markings that I've not been able to reliably cross-reference by looking at pictures of diseased leaves.
Here's one plant, first a wide shot and two tight:
![Image00003.jpg](/data/attachments/1552/1552384-1649a168146c0a942e0409d83f379ccd.jpg)
Here's its neighbour:
![Image00006.jpg](/data/attachments/1552/1552387-2f5eaebf74d533a91e75c7d0bcdf2a8a.jpg)
The burn on the second plant looks like a toxicity of some sort, but the white speckling is a mystery to me. Toxicity? Deficiency?
Data on the environment and gear:
Air temperatures: 76-88F daytime; 71-76F nighttime (active cooling is my next planned upgrade)
Relative Humidity: 27-55%; I have a humidifier to help on the dry days
Cloner: 20L, 13-site DWC
Lighting: T8, 60cm; 4 × 18W; Magnetic ballasts
Water temperature: ~76° - 80°
Water: Reverse Osmosis; 72-80 µS[SUP]1[/SUP] (740-ish µS at the tap)
Reservoir EC: ~500µS
Nutrients: FloraMicro/Bloom using Lucas Formula; RootJuice
pH: Stable, 5.5 - 6.2
I'm'a change my res water and see if the problem clears up, but I hope that in the meantime one of the leaf-reading gurus here will be able to diagnose the problem.
Thanks for reading!
MW
notes:
1. Corrected to "µS" from "ppm"
Here's one plant, first a wide shot and two tight:
![Image00001.jpg](/data/attachments/1552/1552382-1a866f3d943e9292c9f017e43bdb90f2.jpg)
![Image00002.jpg](/data/attachments/1552/1552383-ef16755ece0e85d6c3fc3919db6099f5.jpg)
![Image00003.jpg](/data/attachments/1552/1552384-1649a168146c0a942e0409d83f379ccd.jpg)
Here's its neighbour:
![Image00004.jpg](/data/attachments/1552/1552385-7c4ed4ab13cc6c070870cf9bfc3c1831.jpg)
![Image00005.jpg](/data/attachments/1552/1552386-8abb2ce2a56da435eb9cb42cd43932de.jpg)
![Image00006.jpg](/data/attachments/1552/1552387-2f5eaebf74d533a91e75c7d0bcdf2a8a.jpg)
The burn on the second plant looks like a toxicity of some sort, but the white speckling is a mystery to me. Toxicity? Deficiency?
Data on the environment and gear:
Air temperatures: 76-88F daytime; 71-76F nighttime (active cooling is my next planned upgrade)
Relative Humidity: 27-55%; I have a humidifier to help on the dry days
Cloner: 20L, 13-site DWC
Lighting: T8, 60cm; 4 × 18W; Magnetic ballasts
Water temperature: ~76° - 80°
Water: Reverse Osmosis; 72-80 µS[SUP]1[/SUP] (740-ish µS at the tap)
Reservoir EC: ~500µS
Nutrients: FloraMicro/Bloom using Lucas Formula; RootJuice
pH: Stable, 5.5 - 6.2
I'm'a change my res water and see if the problem clears up, but I hope that in the meantime one of the leaf-reading gurus here will be able to diagnose the problem.
Thanks for reading!
MW
notes:
1. Corrected to "µS" from "ppm"