Hey
Anasazi- sorry for the delay,... OK, lets start with the soil plant, and some big picture stuff....
OF soils have been sucky for a while now--I know! I had several plants TARFU'ed by them this season, both OF and surprisingly, HF,... we're talking 5.1 in the damn bag here, testing with an Accurate 8 soil pH meter (a must get for soil growers, accept no substitute!)... I seriously dislike the run-off method because there are so many places for measurement errors to occur,... that
dolomite is slower reacting, good for pH and some minor Ca-Mg inputs over time, but will do little to correct soil pH that far off, unless it's left to cook and react for weeks, and even then, it may not be enough... in my case, I ended up getting hydrated lime (very different chemically, Ca only), which is
right now fast, but very powerful stuff, and should be used with great caution,...I added this to the soil before planting, though it can be suspended in water and dosed in that way carefully- (BTW, even after fixing the pH, that next round still stunted again, and I suspect the soil was just plain undercooked!...I hear
is artificially aging some composts with urea(?) :slaps:,... so, avoid this brand for now in the future)... point is, with acidic soil, and acidic nutes, the problem has not been addressed, likely worsened,... (I know-- shit-the-bed, huh!)
...you need something to up the pH!....***....I see you're using Sea Grow-:thumbs:... Now, the soil plant: I see more than one thing going on here,...yellowing
hard from the bottom up (veins and all), some of which is normal in budding plants, is usually N defc., which may be contributing to your case--(it's a mobile nute, meaning the plant can pull it from lower older leaves to help support newer growth and bud building-- yes,
some N is needed all the way, it's a primary building block nutrient for any plant tissues, it just doesn't get top billing during flower- note that many bloom nutes still have some N)... I don't think I see any Mg defc.,.. but those dead patches smack of P defc.,... and the described tan-orange fine spotting is typical Ca defc. symptom... *(note, deficiency can come from
a general lack of a certain nute, or it can be caused by nutes being r
endered unabsorbable/unavailable = lockout, due to pH issues causing chemical changes to it- what happens is, even though there's needed nutes in there, they aren't in an absorbable form,... or lastly, through
toxicity, where there's too much of something which interferes with absorption of other nutes).... Sooo, under your acidic conditions, I think it's pH lockout, and it's P that gets locked out first, then Ca and Mg,... Not having an actual soil reading I can rely on (no hack on you bro', it's the method that's faulted IMO) leaves some uncertainty, but all roads point to this reason,... Now, how to fix,.. you've been adding both molasses and Ca-Mg, but not for long, right? so I don't think there's any toxicity danger here...and a flush w/ tapwater with a runoff reading of 6.8? -good, right steps so far, ... BTW, good calls mate!
... it does take time to take affect, and with P and Ca defc., things don't really reverse,.. what you're looking for is a slowing or halting of progression, and good looking newer growth,...some of the more hammered leaves will still croak out!.... keep adding the Ca-Mg, as directed on the bottle, but ease up on the molasses (don't want too much sugar input)-- how much per gal have you been adding? usually, 1T/gal is recommended,... go half of that a couple times a week,... I hesitate recommending hydrated lime at this stage, and w/o any quality soil pH probe to check on things,...:no:
>>> the DWC plant-- alas, I lack experience using this method, but I can still try to diagnose the problem,... I'll scare up somebody with experience for treatment though,...unless it's simple!...... okay, that looks like combo Ca-Mg defc.,... as you know, pH is ultra critical in DWC, because of the very limited windows on nutrient availability-- you've seen this graph before, right?
... see what I mean? We need pH data and nutrient info please,... I'll see about getting a guru in here about this, meantime, get anal about that res' pH and keep on with the Ca-Mg...
.monitor the res every few hours for EC going up or down ...then you know if the res is to hot or not ,then you can adjust with water or more feed .
