My widow is dying! HELP!!

At first I thought this is nute burn so I flushed it with a lot of water and no nutes for over a week. Its getting so much worse! Please tell me what is the problem. I want my girl to survive until harvest!

Temperature is Perfect: 80F.
No heat problems, ventilation is fine.

I suspect that it is the lime I use to fix my tap water's PH. Though it didn't cause any other problems on my other plant.
Thanks in advance!

looks like a nute prob

^P toxicity?

Most tap water only needs time to sit out for a couple of days try that and then check your ph and adjust if needed

if you have tap you have to let it set in the open for at least a good day to let the chlorine evaporate!!

dude the clorine does not evavorate it has to be stripped from the water molecule before it can become a gas, and that happens on a chemical level, most city water system use a clorination compound that is designed to stay in the water supply other wise there storage facility and every damn pipe in the city would have stail water with all kinds of wierd shit growing in it. go get some fish tank water conditioner called aquasafe at petco or pet smart cost is about $7 usd, mix according to directions, then stick a air stone in it for 20 min to mix, your using mg right well dont fertilize it at all unless you wanna kill your girl. mg has more then enough ferts in it to last 3 months almost, only during late flower might and i say MIGHT need to add some nutes to help her finish off till you harvest, just remember this "everytime you water mg soil you are also fertlizing it even with plain water", shits almost to hot for cannabis to grow in, a little h2o2 in your water is good