Is this potassium deficiency

[desplegado]

This plant started to change to yellow 3-4 days ago on the tips of the leaves I've been reading it can be caused by light/tempature and or a potassium deficiency is this right or wrong?
The plant is an auto and its 1 week and 3 days

 

[Phytoplankton]

A deficiency in a plant that small is unlikely. What are you growing in? How often are you watering/how much? Temp, RH? There are many causes of yellowing leaf tips, in seedlings it’s often too much water. Are you feeding?

 

[desplegado]

A deficiency in a plant that small is unlikely. What are you growing in? How often are you watering/how much? Temp, RH? There are many causes of yellowing leaf tips, in seedlings it’s often too much water. Are you feeding?

No nutes
Temp is 73-77 rh is 65-70
I give it 25-50ml of water every 2-3 days bc idk how much to give it
Growing in mother earth performance soil

 

[Phytoplankton]

Ride it out, start watering a little further out from the plant, you want to force the roots to follow the water. I’m not familiar with that soil, so I don’t know if it has any nutes in it.

 

[ProPheT 216]

To my eyes it looks like the soil does have a little charge. It was a little too strong for a seedling so it burnt the first true leaves at the tips. But now that you're on to your next set of leaves, they look to be a little yellow and the plant wants more food than what the soil has to offer. I would do as advised water. Let the roots Chase and see what it does for another 5 days before I decided if it needed more nutrients or not. Are you pH adjusting the water you put into your soil?

 

[desplegado]

To my eyes it looks like the soil does have a little charge. It was a little too strong for a seedling so it burnt the first true leaves at the tips. But now that you're on to your next set of leaves, they look to be a little yellow and the plant wants more food than what the soil has to offer. I would do as advised water. Let the roots Chase and see what it does for another 5 days before I decided if it needed more nutrients or not. Are you pH adjusting the water you put into your soil?

I ph my water to 6.3- 6.5 it's
I had someone tell me that the light could be to much so I raised it a bit and the other 2 plants aren't yellowing on the tips and I'll see what it does

 

[desplegado]

Ride it out, start watering a little further out from the plant, you want to force the roots to follow the water. I’m not familiar with that soil, so I don’t know if it has any nutes in it.

Okay