On the photo it’s dry necrosis (it’s dead), not a dangerous one that attract divers fungus (moist necrosis, black, brown, white).
Generally PH burn, but the nutes switch can equally considered if it’s limited to middle leaves only and zero trace anywhere else.
Take care in hydro with fulvic acid, it potentialize a lot more than in soil. It mean that at EC 1.3 your plants will eat with it like EC 1.5-1.7. It don’t increase the density of nutes, just the assimilation rate.
Anyway change only one factor at a time, and wait the result of this change to test something else ^^
I think the volume of the tank maybe, what’s the respective sizes ?
hell yeah, the show is coming lol You can pinch secondaries just before the last node. It regulate stretch also and for the plant you can cumulate this with trunk/apex pinching.
I’ve had mine running for a couple days on a mother plant and so far the numbers move in the direction I’d expect when wet/dry… so that’s a good start
Excited to see what you do w/ the serial data. I’m currently just reading it ‘live’ but my silly little plan is to dump it all into a csv and manually make a graph when I want to see it… please improve this! LOL
Not sure if this link will work, but I ran across this a while back on a different forum… some wild stuff going on here. Discord
edit: ^^^ I realize that link looks a little suspicious w/o context It’s a discord channel/group w/ a wide range of DIY soil sensor projects. It is kind of hard to sift through the format on discord though… not sure why they chose to host it all there.
Good to see @Tripl3fastaction made it Maybe we can all test in a 4x4 cube w/ RO water and a stock nutrient mix to see how close the pwEC/WC% readings really are.
This is where I’m at now. It’s not to say do this or that; our environments and everything else are different. It’s just a point of reference (with no other parameters, haha). I wanted to test the export to csv in HB. Ignore the “IE”, I think it’s because I had some other numbers in the “Targets” column - irrelevant:
Values calculated for the preparation of 1 gallons
Name
Formula
Amount
Units
Amount
Units
Cost
*Plant-Prod 6-11-31
Input Formula Here
4.8
g
0.0048
kg
0.5
Calcium Nitrate (ag grade)
5Ca(NO3)2.NH4NO3.10H2O
2.8
g
0.0028
kg
0
Magnesium Sulfate (Heptahydrate)
MgSO4.7H2O
1.2
g
0.0012
kg
0
Element
Results(ppm)
GE
IE
Water (ppm)
N (NO3-)
182.596
0%
+/- 32%
0
N (NH4+)
8.136
0%
+/- 272.8%
0
P
60.87
0%
+/- 59.4%
0
**K
326.302**
0%
+/- 11.1%
0
Mg
71.834
0%
+/- 65.7%
0
Ca
140.54
-21.9%
+/- 12.3%
0
S
94.5
0%
+/- 49.9%
0
Fe
3.804
0%
+/- 950.7%
0
Mn
0.761
0%
+/- 4752.3%
0
Zn
0.254
0%
+/- 14238.1%
0
B
0.342
0%
+/- 10574.5%
0
Cu
0.051
0%
+/- 70911.1%
0
Si
0
0%
+/- 0%
0
Mo
0.114
0%
+/- 31723.4%
0
Na
0
0%
+/- 0%
0
Cl
0
0%
+/- 0%
0
EC=2.161 mS/cm +/- 10%
I bumped up the CaNO3 0.2g/G about…a week or two ago (terrible keeping track).
Maybe you’ve got some type of antagonism going on.
Good advice.
This is what we all need to do. And it’s very hard for us all to do. We want the issue to be resolved now (even though it could be from something a week or two before) and so we change parameters of 2, 3, or 4 things we “suspect”. Whether or not the issue “goes away” or “improves”, we don’t really know what resolved it (or made it worse). Shit, even adding one “product” (ie: calmag) and seeing benefits will have us thinking “the calcium and/or magnesium fixed it”, when this is likely not the case or only part of it.
All hail CalMag. Haha.
Great, we’ll see what happens. I’ll not do the fulvic until I have more experience with these Canna nute lines.
I think the Aerogarden instability is related to the small volume (~1 gallon), but there seems to be more going on.
Glad to have learned this trick! Will apply today.
@NoCal thanks for the link! I need to figure out the discord thing and make an account. I’m down to do a group experiment once things get going. It’s nasty weather outside today maybe I’ll be stuck in the office playing today
@Nitt looks a little spicy What format/media are you growing? You told me once but I can’t remember and we’ve had such dense conversations it would be hard to pick out.
After reading a bunch, I’ve been lowering my EC away from that high 1’s to low 2’s (1.7-2.3mS) to mid 1’s (1.3-1.6mS). I think it’ll help with the small space and the discrepancies between plants and their ages. I think several of the guys here have suggested the same in my situation, or for SOG in general. Just an observation and something I don’t think I’ve yet written about.
For sure. Patience is supremely difficult to find during problems. Luckily, these weeds seem to respond very quickly.
Garden Update:
Veg tent looks alright. Topped up res, Romulan cuts got a foliar mist. They are now at 12 days, no roots yet. I think if they can make roots within the next week they’ll make it The seedlings for the solo cup challenge are doing OK in their mapito. Holes only in the lower section of the cup to pull air in during the drain cycle.
How about some pictures of weeds?
I took all the plants out of the tent to do some pinching and documentation this morning.
These are different structure than the others. I think the 907 has an unrefined, wild character that is absent in these plants. The one on the right, not necessarily my favorite, has the structure of instagram pretty weed to sell expensive seeds - lack of excess foliage and sparser bud sites. Developing frost “rails” on the leaves. @Fuel we’ll keep an eye on those tortoise-speed, slow-rooting specimens to the left.
The flower side as a whole after a bit of shuffling:
I need to get this tattooed on the inside of my eyelids.
@Nitt Mind explaining the logic behind that mix? It checks off a lot of the nutrient ratio suggestions I’ve come across, or is at least closer than what I’ve been using (jacks mostly). Ex: 1N:2K, 1Mg:2-3Ca, 1N:0.6P
Hey field just harvest a set here are some pinched and bent because they where to long for my cab
and 3 perfect hight
As said before dont be afraid
If i can you can🥰
Sure! Excited to see how those come along. They really moved a lot compared to yesterday. Everything on flower side is 1-2" taller today. They must be vibin’ with something. I need to get that filter out of the tent ASAP so I can get the light on the roof. Some may wind up sideways like tamimes posted.
Coco, cut with perlite (60/40). E.C. 2.06mS ., 6.01 pH, with my tap. Tap is ~120uS.
Interesting to me though is where are the “burnt” leaf tips from this supposedly high EC? There aren’t any. If I searched I might find a few (out of hundreds of “tips”). But there certainly was no increase in that type of necrosis from increasing the EC alone.
There’s not much, haha.
It’s PP 6-11-31, a pre-blend. And it has slightly more N than Jack’s hydro, and quite a bit more K. I’m stuck with it’s ratios. But I’ve just been increasing the E.C. trying to see what would happen, looking at/for a few things curiously (purpling of petioles, or even stalks/stems, necrotic leaf tips, higher N than I’ve probably ever used, etc.). I don’t remember exactly, but I think I was at playing at around 3.6:1.6:0.8 when I decided to try increasing. I didn’t want to bother trying to keep the exact same ratios, mathematically, so I just “increased” things a couple points at a time every couple reservoirs, mostly PP and CaNO3, together. I did want to keep certain elements under a certain amount. But the “logic” is just maybe random things I’ve heard, and mostly trial and error at this point.
But one thing I did want to note to myself, again (done it before) was that increasing the E.C. did not result in “burnt”/necrotic leaf tips, or an increase in them, at all (with all environmental parameter staying pretty much the same).
Do you use HydroBuddy?
N: P2O5: K2O
1: 0.73: 2.06
N: K
1: 1.71
N (NO3-): N (NH4+)
1: 0.04
Ca: Mg
1: 0.51
It can pop these up in the results page, and then you can add custom ratios to compare other elements. I don’t know how to make the added custom ratios stay though. They disappear when I close and re-open the app.
This is pretty much what I’ve been doing, after messing around w/ a couple suggested Jacks ratios I’ve found that the 3.6/2.4/1.2 works best for me and I just increase/decrease the EC in hydrobuddy for a new mix.
I was wondering if you had a reason for the high K but being stuck w/ it in the base/micro mix is a pretty good reason
I actually did want higher K though. Because I thought I’d been seeing some K deficiency symptoms in flower a few times (using Jacks hydro), though I also don’t know exactly what caused it, and if it was K deficiency for certain. It seems to be happening at a point where the plant would need increased “energy”, so I thought it might be reasonable.
Edit: Might as well say that I think the “browning” of the leaf serrations (necrotic) was related to potassium. And I also think that it’s possible that the necrotic leaf tips (“burnt” tips) could either be the beginning of or a “mild” form of that, or that it could be the beginning of or a “mild” form of calcium deficiency, possibly.
(Last edit: And the PP is a way better deal than the Jacks, in canada. It also seems quite high quality for the salts - I just mean it dissolves faster than Jacks hydro.)
Ah, yea I think this an ongoing problem for me too, maybe I’ll give PP a go next run. Did you ever experiment w/ the Jacks 10-30-20 they recommend for bloom transition?
@FieldEffect
Here are a couple observations from that THC-S meter after watching it for a week.
There is predictable run-off at ~65% (expected from straight coco), but then the meter will continue to clime to ~85% and sit there. Maybe there’s a pocket of water? Didn’t compact the medium enough? Maybe the probe sucks? Maybe I suck? Your RW should be much more uniform, Interested what it reads.
The pwEC reading tweaks out if the medium gets too dry, about ~20% or less per the wc% reading. It will drop very low and then even negative. I think I’ve read that this is normal for these types of meters as the medium gets too dry.
Otherwise its pretty neat to see this data live, the coco dries back much faster than I had expected. I should be plugging it into a pot w/ a drip system in a couple days so I can really fk around and find out how little I understand all this… LOL
Well, it’s not exactly elegant but the carbon filter is out of the tent. Probably the most cobbled-together part of this whole grow. But, filter is back in operation, and it’s sealed up pretty well for cardboard. Good enough for a couple weeks while I get to building the proper version.
The inlet to the “sealed” box is a 3" segment of duct sealed with tape and fits directly over the drawstring tent seals. Snug fit for the filter outlet port, again sealed with tape and once again tape-sealed to the blower intake.
It’s a discord channel/group w/ a wide range of DIY soil sensor projects. It is kind of hard to sift through the format on discord though… not sure why they chose to host it all there.
Maybe we can all test in a 4x4 cube w/ RO water and a stock nutrient mix to see how close the pwEC/WC% readings really are.
What format/media are you growing? You told me once but I can’t remember and we’ve had such dense conversations it would be hard to pick out.
The seedlings for the solo cup challenge are doing OK in their mapito. Holes only in the lower section of the cup to pull air in during the drain cycle.
)
