Sick girl in flowering

I was lurking this thread and am surprised why all the guessing what the issue would be ...

First , MG soil " feeds " every time you water ... It has CRF ( controlled release fertilizer) thruout the mix , no matter which one you use. So all you did with such a heavy flush was continue to RELEASE more Nutes in. Eventually the over flush will LEACH / STRIP the soil of more beneficial things than bad things.

The FIRST flush starts breaking down the salts ( runoff about 20% volume )
The SECOND flush pretty much clears it. Then I let her be for 24 hours .....
THEN introduce a lighter feed to start then as she moves week to week , small increases to desired PPM .

Ph pen is a given .... You will never know what your water lands on ph BEFORE and AFTER mixing a feed. There is a definite P lockout ..... Which would have been fixed a 1/4 dose PK booster added ( to start ) watering / or feeding time. . Leaves will never turn back , only important thing is to STOP PROGRESSION to other leaves.

By PH the mix properly BEFORE adding it in soil , with PH at 6.5 ( not guessing ) will make the lock out needs more available for absorption. I never flush anything as much as what you mentioned , I had to read that twice !

Looking at the runoff color .... Means absolutely nothing. Most modern soils have buffers intermixed into medium for ph control .... But water stripping everything out is not a good thing.

Plus you ADDED more salt in after you flushed ! At 2 TBS per gallon no less !
Go get CALMAG. 1 teaspoon ( teaspoon ) per gallon water , mix in a 1/2 strength of BLOOM Nutes .... Then leave her alone .......

Also there is temp issues in there too ....
Curled up tips ... Taco leaves.

45 gal is a bit much but im ok with it. Let it dry out now till the next time it needs to be watered or fed, dont over water it now, and water or feed till about a gallon of water runs out the pot into the tray. Get rid of the waste dont let the plant sit in that swill. Still think getting some microbes in there working for you would help a lot. Those damaged leaves are not going to come back you need to keep an eye on it getting any worse than what it is. You could pick off the worst of the leaves, I seen about four or five I would pick off, they are not going to produce anything for you and are now just blocking light.

What needs to be done or what your trying to do is nurse this till you can get to the chop. I think the m grow soil is the root of your problems or the best place to start, as you cant control the timed release nutrients and when you grow cannabis you want to add certain inputs for certain results at different times of your grow to get the best performance/yield/flavor.

Still think you need a thick plastic sheet under the tent on top of the floor even though you added a tray. How long has the the tent and pot been sitting there. Im curious if im right about the stain on that floor, if you dont have one consider yourself lucky if your concerned about the floor at all.

Hey guys, sorry i haven't replied to your last comments as for some reason I didn't get a notification... anyway Ive learned to never use that fking mg soil ever again!
After my crazy flush I decided to just water with normal tap water when the soil felt dry a couple of inches deep then crossed my fingers

Anyway I just harvested her last night after checking the trichomes for the past few weeks and being satisfied with my amber cloudy ratio.
Im 100% sure the growth was stunted but at least I got a decent yield nonetheless.
Thanks again for your help! Im gonna get another grow going soon, i think ill do 2 this time around.
ps: ill check the floor and post back lol..