yellow or burnt leaves. NEED HELP please...

Hi guys,

I am having the same problem for more than a week now and worried... and it is rapidly spreading.. The yellowing of the leaves is not ending... i take the yellow ones and meet with new yellows the next day...

is it the bugs? or N deficiency? or N burn? or overwatering (this may be the case)? or is it humidity lockout? more water is evaporating from the leaves than it can get from the soil? or i wonder what it is??

I am in the last weeks of "vegetation" and giving the plants 22 hours of light... should i expand the dark periods??

SK

PS: i had just added some Nitrogen based vegetation solution noww... please urgent help donot know what to do.. i am such a new-bee..




info about the plants:


I am growing in a cabinet, indoor

I have two fans. one powerful exhaust and a small fan ventilating fresh air in.

My watering schedule is once in every 3-4 days..

The PH is around 6.5 and the heat is around 23-28 Celcius Degrees. The humidity: around 35-55

I had planted my seeds about a month ago. And now in the "Vegetation Stage" and waiting for a couple of more weeks before going on to 12/12 flowering..

The lighting is with 8 Light Bulbs (i am using white wiselite 72Watss (5300 Lumen) each for vegetation, will then place yellow daylight ones for the flowering)

For the nutrition I had used a root solution once.

Now I use a "N" based vegetation solution by BioBizz

SK

stop watering so much, wait till its drooping b4 next water,,,,

I agree, looks like over-watering and make sure you have drainage because your roots might need some oxygen. Even if you're watering every 3 to 4 days they look like they're drowning.