Leaf tips yellowing - what's wrong?

Hello Growers,
hope all you doing fine. I need help - I'm at flowering stage and my leafs seems have a problem. They are starting yellowing from tips. I'm growing in soil and using 100% Terra. Could someone help me, what's wrong with my flowers? Thank you!!

Picture of leafs
Picture of leafs
Picture of leafs

Best regards.

Probably nutrient burn. Looks like they might be getting too much nitrogen.

A little light burn with the cupping leaves maybe?

I got 600W HPS light.. When I put hand on top of the flower, it doesn't seem to be hot.. So maybe nutrient burn is right as @ptrzm said.

Anyway I need to switch to bloom at Sunday.. I will watering with PH adjusted water and will see. Hope everything will go right.

k0b3 said:

I got 600W HPS light.. When I put hand on top of the flower, it doesn't seem to be hot.. So maybe nutrient burn is right as @ptrzm said.

Anyway I need to switch to bloom at Sunday.. I will watering with PH adjusted water and will see. Hope everything will go right.

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One key difference you could try looking for is that with light burn, the yellowing usually starts from the top part of the plant ( where the light is closest) whereas with nitrogen deficiency it would usually start from the bottom part of your plant. This is not a 100% way to tell the difference but it could help you differentiate.

ptrzm said:

Probably nutrient burn. Looks like they might be getting too much nitrogen.

Click to expand...

Excessive nitrogen. Leaf color and shape. Tip burn.

Thank you for replies. How could I heal my plants from excessive nitrogen? It seems they stopped growing..

Right now I'm flushing flowers with PH adjusted water.

k0b3 said:

Thank you for replies. How could I heal my plants from excessive nitrogen? It seems they stopped growing..

Right now I'm flushing flowers with PH adjusted water.

Click to expand...

Flush and wait, it takes time. Don't overdo it.