I know it's not 420chan, but I need quick advice

I know it's not 420chan, but I need quick advice.

What is wrong with the plant?

You killed it with your irresponsability, user.

this happened with my plants, i mixed vinegar and hot water and tipped it on them, and in about a week i had no problems.

What ratio of vinegar should I use?

You didn't give it enough love

250ml vinegar and 150ml boiling water 2 or 3 times a day helped me

also pour the vinegar/water mix on the bottom of the plant, dig around the middle and tip it near where you started with the seeds

That is quite a lot of Vinegar on only 150ml of water

it takes longer to fix the plants up if you use less than that

remember it has to be hot water, so the vinegar sets in