Is this phosphorus deficiency?

G

grou

Active Member
I had cold temp problems, which i resolved 3 days ago. My guess is it caused phosphorus deficiency in plants.
Also, my temps during lights on is 24-25 celsius and 19-23 should i lower night time temps? Any ideas how?
Temps outside the tent is constantly 8-9 celsius
 

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They look a nutrient burnt to me, have you tested the run off.

AFAIK plants don't/can't have a deficiency after 3 days, the leafs are food stores.
 
Star Dog said:
They look a nutrient burnt to me, have you tested the run off.

AFAIK plants don't/can't have a deficiency after 3 days, the leafs are food stores.
Click to expand...
Good point, could also be nutrient lockout from salt build up, it looks the same, I would flush with a very weak nutrient mix.
 
Star Dog said:
They look a nutrient burnt to me, have you tested the run off.

AFAIK plants don't/can't have a deficiency after 3 days, the leafs are food stores.
Click to expand...
I actually thought it was build up and flushed them with water on 28-29 january but
Most of people here tell me its deficiency.
I fed them ripen 4ml/liter twice before water flush
 
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