why does this leaf look like this?

there are about 2-3 leaves that look like this on my 3 plants.. can anyone tell me what i may be doing wrong by the pics, i just took?

I dont see a whole lot wrong, maybe a little nute burn,what kind of soil are they in? good luck

If im correct you have more than one plant in that pot? they look a little big to be sharing, seperate them so they dont fight for nutes, that looks like nute splash young leaves die anyways... if its not on every leaf i wouldnt worry mate.... SHELL BE OK!


https://www.rollitup.org/marijuana-plant-problems/352256-please-help-true-smoker-first.html#post4442303

I have them in scotts potting soil.. they're 5 weeks old almost 8 inches tall. what happens if they stay together in the pot?

They all compete for water, nutrients and oxygen in the soil (yes, roots breath oxygen) and will probably become root-bound faster. It isn't ideal.