Indoor , yellowish discoloured leaves , not sure whats happening they are getting 35 dli

[aussie1411]

Not sure why my plants have seemed to stall , yellowish leaves on top , 35 dli 18 and 6 , 50l pots

 

[JIMKSI64]

Looks like a pretty strait foreward nitrogen deficiency, now we have to find out why.
What nutrition support has it been given, medium for grow, temp and humidity, ph or ec,
A fifty liter pot is a lot of medium.
They look like they werr doin fine than a switch got thrown so....
what is the last thing you did before this happened

 

[aussie1411]

Looks like a pretty strait foreward nitrogen deficiency, now we have to find out why.
What nutrition support has it been given, medium for grow, temp and humidity, ph or ec,
A fifty liter pot is a lot of medium.
They look like they werr doin fine than a switch got thrown so....
what is the last thing you did before this happened

In soil , one a fortnight using rizo as nutrients, temp has dropped a bit lately due to weather , humidity is 65 ish , been yellowish a few weeks now , thought it was time to ask for help

 

[JIMKSI64]

Rizo is a product line like Chevy. I have no idea which Chevy you bought.
Confirm which bag and feed rate.
I looked at the rizo blend which is 11-0-3 which is a poor selection for Cannabis. There is a complimentary product that supports the basic blend. Also very poor website as search finds the mention of feed schedule but I can not find it on the website.
Let me know what you are putting in the pot, what schedule and what amount and type of feeding.

 

[Captspaulding]

You are burning your plants
your light is low
Your output percentage is too high
Or it’s a combination of both

 

[Captspaulding]

The reason why is the most pronounced on the top is because it’s the closest part to the light the most exposed parts of your leaves are showing the most damage being the edges and the very tips of is a clear indicator if you look at your plants, the most exposed parts of leaves and the top most part have the most damage
I set your light to 25 to 30 inches above your plants and no more than 50% output for vegetative I would not adjust your light height in any capacity for flowers. It’s always better to just boost your plants up to the light if they want more instead of dropping your lamp down on top of all of them and possibly screwing issues with your entire crop