Is this phosphorus deficiency?

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

They look ready to harvest, you are 70 days in on 12/12, how do the trichs look close up?

+1 for a not hung up to dry yet deficiency

anexgrower said:

They look ready to harvest, you are 70 days in on 12/12, how do the trichs look close up?

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Trichs are not ready yet only 30-35 percent milky and 5 amber

HydroKid239 said:

+1 for a not hung up to dry yet deficiency

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Sp its phosphorus def?

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.

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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.

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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

Ive read cold temps lower phosphorus availability

grou said:

Ive read cold temps lower phosphorus availability

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That is correct. They do lower P.