pardon the delay mates,...
OK, there's more than one thing gone TARFU here, and I'm betting off-pH is at the core of it,... contrary to what some folks hear, using organic nutes doesn't necessarily mean you can skip monitoring your
in-soil pH; what you put in does not equate to what the soil pH is, too many other influencing factors... with organics, you need to have some inoculant or poop teas to help keep the soil microbes populated and active, as it's their job to break down many of the nutes into absorbable forms,...otherwise, everything takes longer to get dealt with, often causing deficiencies along the way,... Also, they are mild, so it's more common to get defc.'s with them generally...
Looking at you dosage amounts, how much water are you adding those amounts into? I know the GO line, use them myself! They're good quality,.. do you use the other supplements in that series? Often, if you use just part of a package line-up, you can get defc'.s because each base formula (grow, Bloom) alone isn't totally complete by itself...
... pH 'ing distilled/RO water is a nightmare, because all of the pH buffering minerals (CaCO3) are removed, so even tiny inputs will cause wild shifts in pH and stability is shite! blending with tap water (dechlorinated) is an option, if you know the ppm's hardness (mineral content) via EC or TDS meter... about 150 ppm is a good starting place before nutes, even Ca-Mg is added,.. with DI/RO, Ca-Mg is needed... make sure it's all carbonate based Ca/Mg, not nitrate (should be 0-0-0)
... an in-soil pH is critical to have in order to know what the next step is to deal with it,... using a quality pH probe is best (Accurate 8 makes a good one), otherwise it's the dubious run-off method... let's see what your dosage dilution is first as mentioned above,... (
https://www.autoflower.org/threads/...-testing-and-ph-estimation.41733/#post-928975 )
As for the symptoms,
they can occur at any time, depending on your medium, feeds, etc., there's no "schedule" to their manifestation, though some do show more often at certain stages, like bloom initiation.... Mg defc. doesn't cause those broad necrotic patches until very advanced, if at all,... doesn't look like Ca defc. spotting either, though on rarer cases it can but usually with other co-symptoms that help differentiate it... My bet is P defc, notorious for large interveinal necrosis.... the all over paleness is pretty generic, and could be a number of things, and that's the case likely here, not one cause alone,... S defc. can cause it, but tops are affected worst and first and I don't see that here-- (epsoms are MgSO4, if you're using the GO CaMg +, skip it, not needed, and BTW, that product is all carbonate based!)... yellowing in this pattern can be N defc. as well,...
... do NOT flush with an epsoms solution! -- last thing you want is a salt bath going on in there... flushing is usually needed more with synthetic nutes, but if there's a toxicity issue from overdosing the nute's, even with organic, it might be needed,... we'll see pending your answers,....
... Big picture: this late in the game, there's not much you can do to improve yields, best outcome is to correct what you can and have them finish decently,... [emoji3]
