Hi all. Any idea what's causing these spots and yellowing of fan leaves?
I thought it was P deficiency as it's well into flower and I've only used Biotabs so far but the Green Sensation doesn't seem to have cured it.
I don't want to try anything else if it will only make it worse!
Problem: Rusty colored spots on fan leaves which then turn yellow.
Medium/grow method: Biobizz Lightmix. PH in/out both 6.5 at last watering.
Feed: and supplements used: 2 biotabs in a 12L airpot. I've started adding Plagron Green Sensation (PK13/14) the last couple of waterings - going from 0.25ml/L to 0.5ml/L at the last watering.
water source: Rainwater/RO water
Strain/age: FastBuds Orange Sherbet/ Day 54
light used: One 50w Cree COB per plant
Climate: Temp approx 26C/Hum 55-60%
Additional info: This plant had a nitrogen toxicity issue several weeks ago followed by some of the rusty colored spots but this cleared up.




I thought it was P deficiency as it's well into flower and I've only used Biotabs so far but the Green Sensation doesn't seem to have cured it.
I don't want to try anything else if it will only make it worse!
Problem: Rusty colored spots on fan leaves which then turn yellow.
Medium/grow method: Biobizz Lightmix. PH in/out both 6.5 at last watering.
Feed: and supplements used: 2 biotabs in a 12L airpot. I've started adding Plagron Green Sensation (PK13/14) the last couple of waterings - going from 0.25ml/L to 0.5ml/L at the last watering.
water source: Rainwater/RO water
Strain/age: FastBuds Orange Sherbet/ Day 54
light used: One 50w Cree COB per plant
Climate: Temp approx 26C/Hum 55-60%
Additional info: This plant had a nitrogen toxicity issue several weeks ago followed by some of the rusty colored spots but this cleared up.



