Help with plant needed

[KonopCh]

Thank you all!!

 

[KonopCh]

Update: I flushed this plant, and EC was 3.2. So salt buildup @Waira? I fed normal before last week, when I up nutes to 2.5. So what caused lockout, if plant is hungry?

 

[Waira]

.... 3.2, was that from the first bit of run-off? yeah, that's pretty loaded,... so, the res' solution is at 2.5? --that's running a bit too rich maybe, at what, about 1250ppm... I'm not a hydro guy, so have you looked to see what other Autopot users are running? In any case, I think it was both off-pH and too ion loaded in there,.. loss of availability, and some interference with uptake because of the high ppm,...

 

[KonopCh]

.... 3.2, was that from the first bit of run-off? yeah, that's pretty loaded,... so, the res' solution is at 2.5? --that's running a bit too rich maybe, at what, about 1250ppm... I'm not a hydro guy, so have you looked to see what other Autopot users are running? In any case, I think it was both off-pH and too ion loaded in there,.. loss of availability, and some interference with uptake because of the high ppm,...

Thank you, sir.
One more question... We know Ca/Mg can lockout other nutes so we add it first in RO water. Then base, then additives etc... What if I lower pH of plain water from 8.5 to 5? And then add Ca/Mg, nutes, additives...

 

[Waira]

:smoking:You're welcome mate! .....well, Ca can cross react with Sulfate, making a flocculant muck,... and too much does potentially interfere with other nute element uptakes, but exactly where that threshold is, I dunno!.. but adding the Ca-mg first is more about getting some pH buffering in there, since chem' nutes tend to be rather acidic,.. and is why you adjust pH last,...