Nitrogen Toxicity?

I think I finally found something that matches my Widows problem.

1 week into flowering, fox farms OF/LW/perlite mix. 6.4 ph 400w hps with a couple 2700 cfls for side lighting in a grow tent 6 in exhaust.

Is this from too much nitrogen?

This text is copied from https://www.rollitup.org/marijuana-plant-problems/216537-self-diagnose-your-plants.html

"Now for having too much nitrogen in your growing mediums or soil. The plant will have like an overall DARK green look and have delayed maturity. Due to Nitrogen being involved in vegetative growth, to much nitrogen will result in tall plants with weak stems. New growth will be very lively and plant transpiration will be high, but not always. Nitrogen toxicity can be seen when there are very very dry conditions almost as if there was a drought, which may show a burning effect. If you give your plants ammonium based nutrients they may show NH4+ toxicity, which will show a smaller plant growth and lesions that occur on stems and roots, leaf margins that will roll downward. Also the big fan leaves will have “the claw” look. The tips will point down but the leaves will stay up as if when you bend your fingers downwards. Leaves can be twisted when growing… mainly new growths. Roots will be under developed along with the slowing of flowering. Yields will be decreased, because to much nitrogen in early stages of flowering slows down bud growth. Water uptake is slowing down from the vascular breakdown of the plants as well. Too much potassium and nitrogen will lock out calcium as well."

Seem to match the issues I have?



I'd sure like to get this plant healthy again.

Does it need a flush? fraid I only have 3 gallons of water ready.. 3 gall pot so i'd have to dechlorinate 6 more galls and ph it.. would take an extra day.

If I did end up flushing, how fast does one actually run the water thru the soil?

Any help would be greatly appreciated!

Thanks

Let me get this right....... You have not given your plants any nutrients, and you are wondering if they are overdosing on nitrogen?

No. They are not. Maybe when you actually feed them they will.

it really doesn't look like you have a problem. nitrogen toxicity is much darker green.

Ace Smoking said:

Let me get this right....... You have not given your plants any nutrients, and you are wondering if they are overdosing on nitrogen?

No. They are not. Maybe when you actually feed them they will.

Click to expand...

They have been fed every other watering with fox farms grow big and big bloom. Two of my plants are looking good, the white widow isnt. I gave them an extra feeding of grow big a few days ago to boost the nitrogen for the flowering stage.

Not sure where I said I havent given them any nutes.

I just am tryin to correct this problem and get my plant healthy.

Thanks!

desertrat said:

it really doesn't look like you have a problem. nitrogen toxicity is much darker green.

Click to expand...

Thanks Desertrat. See the leaves cupping down? I'll see if I can go take some better pix. and the fan leaves are burning or something. I dont have those issues on the other plants. First grow, just worries me. Shes just not a happy plant I dont think. The tips of the leaves kinda curl downward also.

This is too much N





Deep green when a kid, short roots, delayed budding.

This was caused by miscalculation during Veg. N ratio was +150% (N was about 5)

Thanks Pat

Heres some better pix. Maybe these can help with a proper diagnosis.

Notice the leaves cupping down and the burn on the fan leaves.

The last pix is one of my other plants. I dont see any of these symptoms on it at all.

The help is appreciated very much!

anybody have an idea what that is caused by?

I have some o.g. 18 that looks identicle to your N overdose picture. Just started flower and it is struggling. What exactly is the best way to fix it? I have some bush doctor made by foxfarm. Should i flush it with that?
Thanks