PICS ****IS this Nitrogen toxcity or Nitrogen lock out/deficency?

Is this Nitrogen lock/deficiency or Nitrogen Toxicity? im useing COCO & Perlite 50/50 in 11lte dirt pots, ph water 5.8. I flushed through 5 litres of phd water 5.8 mixed with small amount of superthriveave and no chage, new leaves are still effected. its been 48 hours and the plant is the same with no change. but now all my plants have some sign of this issue. i have looked everywhere i really can find a straight answer. Im running 2x600w hps bulbs , oxygen feed and a exhause fan. i have 4 lights in the grow room in total, i have a temperature heater for my nutes this is kept in the dark and covered, i have also fitted a oxygen pump to the nute bucket.

Please please help, i did look in the forum but not everyone got all these signs of illness on the leaves.


The tips drop then start to curl under was the first sign, now i have leaves shaped like a V

They look fine to me...maybe a little thirsty and a little warm for them.

Drooping from under-watering and leaf tips curling upwards due to trying to cool off?

Looks like minor nitrogen overdose (leaf tips curling under and dark green colour)

Throw a fan on them, possibly lower the temp a little and make sure they're getting enough water and nutes (when they need it) and you should be fine, some of my leaves do that pointing down type thing too. It's not necessarily a big problem.

Yes the leaves point down but they curl under, i fed the plants a day before the photo, sorry guys i do have a ocilating fan. its good practice to flush the plants every 4 weeks i have read elsewhere? is this true? if so how many litres of water per 11ltr pot. With a Small amount of superthrive will be added to the flush, ive cut my nutes by 50% (DUTCH PRO) and i have held back on cal-mag seems to of made it worse?

The upward tacoing is from heat.

Feeding oxygen is counter-productive unless you are feeding it to the roots. The foliage feeds off of CO2 and light for photosynthesis and releases oxygen into the atmosphere.

DrGreenthumbsSon said:

Yes the leaves point down but they curl under, i fed the plants a day before the photo, sorry guys i do have a ocilating fan. its good practice to flush the plants every 4 weeks i have read elsewhere? is this true? if so how many litres of water per 11ltr pot. With a Small amount of superthrive will be added to the flush, ive cut my nutes by 50% (DUTCH PRO) and i have held back on cal-mag seems to of made it worse?

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I follow my feeding schedule when it comes to flushing, if you don't have a specific schedule, then i guess flushing once a month can't hurt them.

Respiration in foliage requires oxygen, it's just that during the day, there's a net intake of CO2. It generates more O2 than it uses during the day.

mtgeezer said:

Feeding oxygen is counter-productive unless you are feeding it to the roots. The foliage feeds off of CO2 and light for photosynthesis and releases oxygen into the atmosphere.

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Where should i go from now? mixing up a new batch of nutes today. is this ok? please add or remove anything i need please

plant magic root stimulant 5 mill per Litre
Plant magic magne cal + 1mil per litre
dutch pro Coco a&b recommend 250-350mil per 100ltr

hows this guys ?