Bottom leaves issues

[Omx]

Hi growers,

I hope you're all sound and safe.

I am facing an issue with a White Widow Automatic from Royal Queen Seed for the past couple of weeks.

The plant is a bit more than 3 weeks old and started showing issues after being fed 2 weeks ago.
I'm feeding the plant with:
- BioBizz grow for the past couple of feed
- BioBizz bloom for the last feed
- CalMag for the past couple of feed as well

Feeding cycle is approximately every week, for 1L of water, to which is added the BioBizz (1ml) and CalMag (1ml).

Originally thinking of a CalMag defiency, I'm now thinking that I could face a case of nutrient burn on this plant.

It's being grown as a test under some USB LED lights on a 24/7 cycle, which, to me, seems to have brought good results considering the size of the plant.

The problem is ongoing and is getting worst for the past week.

Would any of you have any advise on the origin of said issue and how to fix it ?

I was thinking of simply feeding the plant PH water for the next feed until the situation gets better, but concidering my thought of CalMag defiency, I'm doubtful on the next actions.

Thank you for sharing your expertise on this

 

[TBuurman]

Looks like you need calming, also 24/7 light cycle will gtrow your plants bigger at the start but you will run into a lot of more problems, you are starving the roots, when the lights are off is when the roots eat and get all the nuts from the median, think of it ass sleep if we go a while without our rest we will run into problems, plants are the same but don’t sweat it! You could cut the bottom leafs off if they start to transfer to other oneself I would for sure switch to 18/6 lighting

 

[Omx]

Hi TBuurman,

Thanks for your advice.

To explain the light cycle, I was afraid the plant would not get sufficient light considering the poor light amount emitted by USB lights, but it seems OK, so I swapped back to 18/6 starting for the past night.

I'll just water the plant with PH 6.5 water today as the soil seems dry enough and will follow-up on this.

Thanks again.