hey guys, this is my very first grow.
my biggest auto (AK-420 from Zamnesia) seems to have some problems i can't get my head around - the others seem fine.
i am using biobizz nutrients (bio grow, bio bloom, top max thrice a week according to the scheme) and my plants are rather close under a chinese LED (blurple, ~200w power draw from wall).
temperature is in the range of 25-29 deg C and humidity stays between 35-50%.
i can't say anything about ph as i cannot test runoff (i grow in grow bags and there is no runoff usually).
as you can see in the pictures some of the fan leaves are developing small yellow spots that spread inwards and are now crispy and bright yellow/orange.
also, some leaves (especially the upper ones) seem to have light green/yellow tips.
from reading countless forum posts i think i have narrowed it down to cal deficiency and general overfeeding. i have stopped feeding them any nutrients while i am waiting for my biobizz calmag to show up (might be another 4 days).
how do i go about fixing this? do you agree on this being due to cal deficiency? what about the lightened tips? do i introduce the calmag as per scheme or should i supplement more?
i am quite clueless atm but still calm (bud development seems slow but is fine) - any help is greatly appreciated!
my biggest auto (AK-420 from Zamnesia) seems to have some problems i can't get my head around - the others seem fine.
i am using biobizz nutrients (bio grow, bio bloom, top max thrice a week according to the scheme) and my plants are rather close under a chinese LED (blurple, ~200w power draw from wall).
temperature is in the range of 25-29 deg C and humidity stays between 35-50%.
i can't say anything about ph as i cannot test runoff (i grow in grow bags and there is no runoff usually).
as you can see in the pictures some of the fan leaves are developing small yellow spots that spread inwards and are now crispy and bright yellow/orange.
also, some leaves (especially the upper ones) seem to have light green/yellow tips.
from reading countless forum posts i think i have narrowed it down to cal deficiency and general overfeeding. i have stopped feeding them any nutrients while i am waiting for my biobizz calmag to show up (might be another 4 days).
how do i go about fixing this? do you agree on this being due to cal deficiency? what about the lightened tips? do i introduce the calmag as per scheme or should i supplement more?
i am quite clueless atm but still calm (bud development seems slow but is fine) - any help is greatly appreciated!
