I just hit 4 weeks in flower and am having trouble diagnosing an issue I’ve been noticing. I’ve been searching the forum and haven’t been able to find a similar issue.
It kind of looks like either light burn or a cal mag deficiency but I’m not sure. Humidity obviously goes way up the day of and after watering and then slowly drops the following days until the next water. Something else I noticed is that the upper third of the leaves are being affected but not the bottom leaves. Leaves are also serrated and canoeing slightly. Thanks in advance!
Week 4 flower
Flushed right before flip and switched to Jack’s.
6.5ph going in / 5.9- 6.1 coming out.
Watering to run off every 3rd or 4th day after almost completely dry with 1.3gal.
Supplementing with recharge(every other water), mkp, cal/mag, Tribus(every water).
Just moved lights up a bit and dimmed to 70 instead of 100 percent.
Temp- 78.5 Humidity- 65% bottom 45% canopy
Nute Breakdown per 1.3gal
5 / 3 / 1.6
Recharge (every other water)
Tribus (every water)
A couple more additional facts that I forgot- I started adding mosquito bits to help get rid of midges, as well as a bit of lime as top dress to help stabilize PH.
Your ladies look hungry for calcium and nitrogen. The tiny spots everywhere are calcium and the light green looks to be a nitrogen deficiency. Id wait for a few more replies before making any decisions but just my thoughts on it based off these charts i like to refer to
What soil? What size tent? What light? Can I see a picture of whole plant?
I don’t use jacks but isn’t it used at 3 2 1. Also you say .6 mkp is that a little over a half teaspoon at 0 52 34.
FF HF, 3x3, 2x SF2000
That’s pretty close to the normal Jack’s ratio. The standard is 3.6/2.4/1.2, but I’m in flower and also watering with a little over 1.3 gal. For the MKP, it’s .6 grams which is probably close to half a tsp. Maybe a little more?
Here’s some quick photos of the 2 plants in question (far left & center). They went lights out about 45 minutes ago so I didn’t want to disrupt any more than I had to. The camera flash is like lighting, right? Stormy night for the ladies
Are there individual calcium and nitrogen supplements you would recommend? Would simply sing more cal/mag to the feedings be sufficient?
Were you having issues with ph? I would start with a slurry test ph and tds. Get an idea of what they’re rooting around in. What does your ppm test prior to feeding and what do you see in runoff?
I was having issues with PH during veg, flushed, and all was kosher until about two weeks ago. Started noticing the issue slightly and I haven’t been able to correct. Will do a slurry for sure! I’m not sure how to test for ppm before a water, but runoff is normally sound 500-800 more than what’s going in.
Just use the tds pen before adding nutes/supplements then again after it lets you know what you’re adding. Ph water/food going in soil to 6.5.
I think it’s strange that it’s the top half- third of the leaves. Bottoms seem to be fine.
I would definitely check your runoff ppm and ph to see where your sitting at first as @Freebirdmikes recommended. I used jacks 321 so if i needed more calcium id up my part b as it contains both calcium and nitrogen
I’ve had ph drop in soils and the plant not uptake needed nitrogen, lower older leaves weren’t affected as bad.
Best you can do is test and see where it’s at. Slurry test is simple
I thought you meant test the soil ppm first. Runoff ppm on last water was between 1500/1800 on each plant. Tomorrow is water day so I’ll get back to you with hard numbers on both PH and PPMs!
That’s a great idea. Thank you!
Jacks seems to be a fantastic product overall. I haven’t used it but minor adjustments to ratios, In my understanding is able to correct most deficiencies.
In my soil I water/feed to 20% runoff every time they’re over 5gal pots each gets roughly 2 gals every 5-7 days. I test everything every time, I can see what’s going on regularly.
The fist message I did suggest that with a soil slurry test. It’ll give you a more accurate reading of what’s in the soil not just running out of the bottom
I get about 10-20% runoff using a little over 1.3gal, and they’re in 5gal fabric pots. Watering every third or 4th day.
Should I take a sample from any place in the pot specifically? As in, should I did a little bit?
I’m thinking to much potassium and phosphorus. When I run ff soil and give flower fuel I get this when it starts I stop the flower fuel and keep feeding everything else as per normal. Sometimes by harvest time they can be pretty brown at the top of the plant with still some green at the bottom gives me a nice harvest with big fat buds. 2x4 5 plants 24 ounces.
You are at 4 weeks flower if you keep feeding normal and watering the way you are they will pull all the way threw with nice buds. In my opinion. Hard to kill weeds if they have water.
??? Question are these autos or photos???