How to Flush plants?

[FullKeel]

Is it necessary that I ph ALL of the flush water?

Also two of my Freedom35 plants show signs of brown spots, some leaf margins getting crispy...could have been a ph error along the way, could be some kind of deficiency seeing as they're in ProMix xp...Nutes are Foxfarm so I don't think it could be nute burn.

I was going to cull affected leaves, flush, see what happens in a week and go from there...Any tips would be appreciated. Thanks!

 

[EastCoastHaze]

id recommend you PH your flushing water. Rule Of thumb ive gone by is double the amount of water as your container size for a proper flush. Pictures will help us point you in the right direction as to what the leaf chlorosis is from.

E.C. Haze

 

[FullKeel]

Thanks ECH. Here's a link to a post with leaf pics. Necrosis looks to be mostly isolated to margins and any chlorosis is forming between the veins. I would say matters have gotten slightly worse since I posted these pics 3 days ago.
I am now prepping flush water for later today.
I'm looking forward to your input. Thank you.

https://www.icmag.com/ic/showthread.php?t=284957

 

[JointOperation]

for veg.. that plant looks like some sort of ph issue or could be root bound? anyways.. when that happens. i flush my plants with 1/4 to 1/2 strength nutes 2-3x the amount of soil or medium.. and drain and get rid of the excess water..

for harvesting..
ill just say.. dude. get yourself a microscope 60-100x. and check trichomes before starting to flush.. u dont wana flush too early.. it will hurt and not help your yield.

 

[mowood3479]

in promix i almost never flush... usually not needed, i do feed straight water last 2 weeks of flower.
peat (promix) tends to become acidic over time, especially when being watered with salt based ferts (also acidic)... so in the rare instance i do flush, i do not ph my tap water but it comes out at 7-7.5 so i figure tbe slightly high ph will correct the promixs tendency to become acidic (low ph)

 

[FullKeel]

Plant was flushed as remedy to mystery problem of a very sensitive strain...turns out it was a ventilation problem so the flush was in vain. Plant is not on chem nutes and a good idea to occasionally check ph of run-off, never knew about peat becomming acidic. Thanks!

 

[FullKeel]

for veg.. that plant looks like some sort of ph issue or could be root bound? anyways.. when that happens. i flush my plants with 1/4 to 1/2 strength nutes 2-3x the amount of soil or medium.. and drain and get rid of the excess water..

for harvesting..
ill just say.. dude. get yourself a microscope 60-100x. and check trichomes before starting to flush.. u dont wana flush too early.. it will hurt and not help your yield.

J-Op, thanks..now i did not realize how bad the ventilation was in the room and temps were up to high 80's. After that was corrected temps to 79 w/ decent exchange of fresh air, this problem looks like a memory. Also ph meter is on point now and plant got flushed with "true" value of 6.0.
I will post pics of plant 1 week later.