Ph levels

250ml of vinegar to 1 liter is too much. Wash the soil. If you put any good source of organic matter, like humus(worm casting), to the soil the microorganisms will take care of the pH. Just feed with small amounts of molasses and the plant will thrive strong and very smelly

I agree with the others here, 250mL was likely way too much. I have seen negative effects from just 10mL of IPA added to a gallon (3700mL) water just as a surfactant to get nutes to dissolve better, and since I have always calculated expected PPM and tested to make sure when I am using stuff like that. Even though IPA isn't organic, (vinegar is), using 10mL in 3700mL gives ~0.2-0.3%, aka 2000-3000 PPM (This is high enough to be concerning to me). Using the same calculations (250mL in 1250mL total solution), gives 20% or 200,000 ppm vinegar, which is outrageously high. Try to get an electronic TDS/EC meter and a PH meter, flush the hell out of that soil with distilled water, and don't let that happen again. I am honestly surprised this plant is even still alive after a dose like that... what a beautiful strong plant mother nature has given us. Hope this helps, Good luck.

Id be giving her a light flush, and testing the run off ASAP. I have a feeling its going to be so low ur going to keel over in shock. 25mls would have been enough, 250mls is likely to kill it. but more to the point- and correct me if Im wrong here, but your soil mix is 20% cocopete, im assuming thats a coco peat mix? Thats acidic on its own, So for your soil to test at 7.5 id be VERY surprised if it was the case. Unless ur added lime, dolomite (or heavens no, bi carb soda)!! or previously adjusted the soil before quite harshly too. Im wondering if ur using strip tests or a PH meter and if its a meter - how old is it, and have u calibrated it recently?? Soil should test in the 6's if there is any kind or organic matter in it and if it really is testing at 7-7.5, then its time to get a diff type of soil as thats no good for growing. or add a bunch or well rotten manure and compost, that will lower PH too. Look at how they grow blueberry's for idea on how to lower soils Ph naturally and easily.

Being a beginner, my main issues came with my pH and ppm. I am growing in RDWC, so I won't even begin to advise on additives, different household fixes etc for soil. But I will say that I check my levels every day. There is a "sweet spot" where your plants will really thrive and explode with growth. You see the effects much quicker in RDWC and it has been easy to correct. I know there is a slight lag time with effects in soil. Again, I don't have a precise answer for you. However, if you are diligent with insuring these two are acceptable and within good ranges, I think you will see some new growth begin. Good Luck. Maybe you will be fine! I hope so. 👌

The reason it is not growing as fast as you would like is because you forgot to fill the pot right up to the top and she is spending a lot of the day in the shadow of the walls of the pot, as can be seen as indicated in pic 2. Had you filled the pot right up, she would be getting sun from dawn til dusk, right now she is only getting sun in the middle part of the day when the sun is higher in the sky, this can affect growth greatly outdoors. At this stage and considering what you have done, I would be giving her 2 litres of plain tap water to reduce the vinegar effect, waiting three days, then giving her some seaweed tonic/extract to get her on her feet again. The seaweed tonic is like a "pick-me-up" for plants and will also do wonders for the soil and root system. You could also try and fold down the fabric pot so that she is getting direct sunlight earlier and later in the day, although with only 12 hours of sunlight, growth will be slow until there is 13-14 hours of sunlight each day. Hope this helps, Organoman.

Yeah vinegar has a pH of 2-3 apparently.. so given that pH increases 10 fold every full point, you’re mixing something that’s 1000- 10,000 times more acidic at a rate of 1:4.. so the pH of that liter you fed it was probably around 3-4 if my math is somewhat close to correct

Dude that’s like a 1:4 ratio - I would bet my ass that’s insanely steep.. you should only need a nudge to drop the pH