What is this? Rogue plant?

[Doozy]

Dinafem Critical Cheese, hydro drip feed bubblers. 24 days from seed.

Just doing the first defol of the biggest fans and as i removed one of the dinner plate leaves....THIS was underneath.

You tell me what the f@&k this is!!!

From one seed.....trippy as f£$k!

 

[JuanCarlos]

I would be willing to be that plant did not come out of you cannabis seed.

 

[Doozy]

Where else would it have come from? I don't go round throwing random seeds in my grow tent!

 

[Hydrotryptan]

Did you reuse your Hydroton? It pretty much looks like common weeds (you know the bad weeds in your garden, not the good one in your hydrosystem)
Im not an expert but i would say kill that intruder and use new Hydroton where you can/next time.

Good Luck with your Babies