sir_isOanswered grow question 4 years ago That's some form of toxicity it's got there.
What's that blue shit?
I would suggest you transplant it to a larger pot with clean, different soil, mostly...
Like, take it out, put it in a bucket of water, rinsing the roots basically...and place it into a larger pot with other soil.
Yes, some people will say you shouldn't transplant autos, but in your case I would highly recommend it.
PS. Personally I have no use for perlite, whatsoever. There are better ways to aerate soil.
Feel free to message me if you would like to ask questions.