Leaf problem

[brownred]

I’ve already picked 2 lower leaves . Now the next 2 lower leaves to grow out have the same issue. Can someone tell me what’s causing the brown? The rest of the plant is green.

This is a Clone from a plant in very early flower

 

[Wolfe]

Looks like it wasn’t getting enough nitrogen or the correct amount of nutrients it likes.

 

[Aqua Man]

How long has it been in the soil?
I get the feeling it's within a few days?

 

[Mr.Juice]

I had a similar problem my second grow when I started using RO water. Was lacking in micronutrients. Started on the bottom leaves and began moving upward. Mg deficiency? Maybe

 

[Ina]

Whats that soil?Doesnt look bad,i think it shouldn't have deficiencies in it yet.....Soak it very nice once,all of it not just in the middle,than leave it to dry enough.I think it is something with your watering.Roots cant have good contact and uptake with dry soil.Or may be you used it dry when you planted the clone?