Hello guys,
I'm trying to isolate the problem, but can't find any solution.
I saw yellow spots on some big leaves of my Moby Dick XXL AUTO plants. They are in the flowering stage.
Watering/Fertilisers: 50% net water (sink) and 50% demineralized water; adjusted to pH 6.5 and E.C. 0.3-0.4, plus 1 mL of Alga Bloom in 2 L of water (1 irrigation with only water and 1 with the fertiliser). I'm planning to scale up with nutrients slowly.
Had a EC issue a few days ago, due to a salt build up in the soli, so I flushed the soil with a balanced solution of demineralized water and normal water, adjusted to pH 6.5 and EC 0,2, containing Alga Bloom to replace the old salts.
A few days ago, some small yellow spots appeared, on the big leaves. In 3-4 days, the small yellow spots turn in a necrotic area of the foliar tissue. And I start to see the small spots on the upper big leaves of the plant. Plus the necrotic area grows day by day.
PICS BELOW
Could you please help me figuring out if it's a deficiency of some kind? It doesn't look as a Calcium deficiency, as my net water contains it a lot (that's why I mix it with demineralized water).
Thanks a lot, hope you can help me.
I'm trying to isolate the problem, but can't find any solution.
I saw yellow spots on some big leaves of my Moby Dick XXL AUTO plants. They are in the flowering stage.
Watering/Fertilisers: 50% net water (sink) and 50% demineralized water; adjusted to pH 6.5 and E.C. 0.3-0.4, plus 1 mL of Alga Bloom in 2 L of water (1 irrigation with only water and 1 with the fertiliser). I'm planning to scale up with nutrients slowly.
Had a EC issue a few days ago, due to a salt build up in the soli, so I flushed the soil with a balanced solution of demineralized water and normal water, adjusted to pH 6.5 and EC 0,2, containing Alga Bloom to replace the old salts.
A few days ago, some small yellow spots appeared, on the big leaves. In 3-4 days, the small yellow spots turn in a necrotic area of the foliar tissue. And I start to see the small spots on the upper big leaves of the plant. Plus the necrotic area grows day by day.
PICS BELOW
Could you please help me figuring out if it's a deficiency of some kind? It doesn't look as a Calcium deficiency, as my net water contains it a lot (that's why I mix it with demineralized water).
Thanks a lot, hope you can help me.