organic grow n toxicity

biginjvpvn · Apr 13, 2023

End of week 4- Beg of week 5 @ 30 DLI
Critical 2.0 and CDLC

This is my second attempt for autoflowers with bitotabs line. This time Im using Silicium Flash.
Soil: Biobizz light mix
15L Fabric pots
Both tabs were placed around day 10-11 after they popped from soil.
RH- 65%, 0.7 kPa
Temperature - 24-25C
Watering 1.5L every week (I am worried of overwatering and ruining roots because soil seems moist when I check it after 3-4 days)
PH 6.3

The one with claws is closest to the fan and honestly I have no idea what caused clawing leaves.
Suspecting N toxicity.
But how do I fix N toxicity when growing organic? Flushing would be useless

Hollatchaboy · Apr 13, 2023

Looks more overwatered to me than anything. Also, light intensity may be a lil high. Just my opinion.

go go kid · Apr 13, 2023

how can it be N toxcity, if its organic soil grow, the only way you can get n toxicity is if your feeding them too much growing plant food. are you feeding her? you've not said

biginjvpvn · Apr 13, 2023

go go kid said:
how can it be N toxcity, if its organic soil grow, the only way you can get n toxicity is if your feeding them too much growing plant food. are you feeding her? you've not said

No I'm not feeding anything, only fertilizers were tabs and just water.
Not sure if thats overwatering issues, 1.5L once a week.
What do you think can be the issue?

Hollatchaboy · Apr 13, 2023

What time of the cycle, did you take the pic?

biginjvpvn · Apr 13, 2023

Hollatchaboy said:
What time of the cycle, did you take the pic?

26 hours ago I gave them water+backtrex(dry, water-soluble powder with a large number of beneficial soil bacteria and root microbes) and pic was taken right before they were going to sleep and 7 days after last watering

Hollatchaboy · Apr 13, 2023

biginjvpvn said:
26 hours ago I gave them water+backtrex(dry, water-soluble powder with a large number of beneficial soil bacteria and root microbes) and pic was taken right before they were going to sleep and 7 days after last watering

I mean what part of the cycle? At lights on, in the middle, or just before lights off?

biginjvpvn · Apr 13, 2023

Hollatchaboy said:
I mean what part of the cycle? At lights on, in the middle, or just before lights off?

sry mate, just before lights off, 10-15 mins

Hollatchaboy · Apr 13, 2023

biginjvpvn said:
sry mate, just before lights off, 10-15 mins

Do the leaves have that droop thru the whole lights on cycle, or just before lights out?

biginjvpvn · Apr 13, 2023

Hollatchaboy said:
Do the leaves have that droop thru the whole lights on cycle, or just before lights out?

I mean they obviously droop when lights off. On pics they're LST'ed so may be it looks like it? But overall they don't droop.
I'll take another pics today when lights on.

biginjvpvn · Apr 13, 2023

Hollatchaboy said:
Do the leaves have that droop thru the whole lights on cycle, or just before lights out?

Hollatchaboy · Apr 13, 2023

Man, they don't look that bad to me. Leaves still look a lil droopy to me though.

biginjvpvn · Apr 13, 2023

Hollatchaboy said:
Man, they don't look that bad to me. Leaves still look a lil droopy to me though.

hm, do you think that even 1.5 litres once a week is a lot?
Or may be not enough?
tbh i think backterias kinda helped

Nutty sKunK · Apr 13, 2023

biginjvpvn said:
End of week 4- Beg of week 5 @ 30 DLI
Critical 2.0 and CDLC

This is my second attempt for autoflowers with bitotabs line. This time Im using Silicium Flash.
Soil: Biobizz light mix
15L Fabric pots
Both tabs were placed around day 10-11 after they popped from soil.
RH- 65%, 0.7 kPa
Temperature - 24-25C
Watering 1.5L every week (I am worried of overwatering and ruining roots because soil seems moist when I check it after 3-4 days)
PH 6.3

The one with claws is closest to the fan and honestly I have no idea what caused clawing leaves.
Suspecting N toxicity.
But how do I fix N toxicity when growing organic? Flushing would be useless

That little extra N at this stage of growth is fine!!

Shows you are on the limit and don’t add any feed for a week or two, watch old and new growth for sign N tox has stopped and not become deficient

Nutty sKunK · Apr 13, 2023

biginjvpvn said:
hm, do you think that even 1.5 litres once a week is a lot?
Or may be not enough?
tbh i think backterias kinda helped

Too infrequent. My seedlings get it every 3 days Then 2 in flower. It’s just the quantity that changes. You want to keep the soil in a happy range, not too wet or dry

biginjvpvn · Apr 13, 2023

Nutty sKunK said:
That little extra N at this stage of growth is fine!!

Shows you are on the limit and don’t add any feed for a week or two, watch old and new growth for sign N tox has stopped and not become deficient

appreciate your input, mate. hopefully you're right!

Nutty sKunK said:
Too infrequent. My seedlings get it every 3 days Then 2 in flower. It’s just the quantity that changes. You want to keep the soil in a happy range, not too wet or dry

noted, will see tomorrow or day after how is the soil.

biginjvpvn · Apr 15, 2023

biginjvpvn said:
appreciate your input, mate. hopefully you're right!

noted, will see tomorrow or day after how is the soil.

photos taken before watering
thinking next watering to combine fertilizer Orgatrex(5-1-5) with beneficial soil bacterias

organic grow n toxicity

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