Some sort of deficiency or overfert?

[Hellavated]

I have a weird yellow striping going on in my plants, also another girl had this weird wrinkly leaves, also accompanied by what I thought was nitrogen tox, the claw? My medium is Coco, girls are from clone and are Dosido and Louie. Temps stay @ 80 during day and 75 during night. They are on 18/6 light cycle about 5ish inches away from a t5 with a couple uv bulbs. They're fed more or less once a day with hard water, CocoA+B with myco at 1/4 dosages w/ hard water. . Relative humidity is a bit low @ around 50percent fluctuating +/- 5%. Clones showed impressive root growth prior to transplant. Haven't gotten ppm but PH was @ 6.6 now is @ 5.8 consistently.

 

[Hellavated]

First and second picture shoe striping from most to least severe, this picture shows wrinking

 

[GuyManDude]

how wet is the coco?

looks like micro nute deficiencies to me. Calcium, maybe zinc, iron - stems from overwatering

what nutes are you using? you're not mixing perlite with your coco?

 

[Hellavated]

No perlite with the Coco, was thinking about doing it during 3g transplant. I'm using HG CocoA/B, Coco gets a bit dry topside then gets watered again.

 

[InNvBoarder]

Make sure your ph meter is calibrated and get yourself some cal-mag. Need calcium and magnesium supplement when in coco. Start your ph 5.6 and let it drift to 5.8/5.9. I been in coco for 10 yrs easy and I like cutting it with little perilite or roots organics to air it out during red cup time. Once they take off dosent matter as much. Id transplant to 1 gal and make sure your ph is correct the feed calmag and little grow nutes. They will straighten rite out.

 

[DONAJTHEIII]

I have a weird yellow striping going on in my plants, also another girl had this weird wrinkly leaves, also accompanied by what I thought was nitrogen tox, the claw? My medium is Coco, girls are from clone and are Dosido and Louie. Temps stay @ 80 during day and 75 during night. They are on 18/6 light cycle about 5ish inches away from a t5 with a couple uv bulbs. They're fed more or less once a day with hard water, CocoA+B with myco at 1/4 dosages w/ hard water. . Relative humidity is a bit low @ around 50percent fluctuating +/- 5%. Clones showed impressive root growth prior to transplant. Haven't gotten ppm but PH was @ 6.6 now is @ 5.8 consistently. [URL=https://www.icmag.com/ic/picture.php?albumid=59060&pictureid=1660402&thumb=1]View Image[/url] [URL=https://www.icmag.com/ic/picture.php?albumid=59060&pictureid=1660401&thumb=1]View Image[/url] [URL=https://www.icmag.com/ic/picture.php?albumid=59060&pictureid=1660400&thumb=1]View Image[/url]

Personally I think your environment is off get it down to the low 70s. 80 with T5s wow that's kind of hot IMO. Do I think that's the main problem no is it helping no so id fix that. Next they look hungry what's your ec of your feed? Also in your last photo I can see that coco is super dry I don't ever let it get that dry. Check your runoff ppm and I bet it's way higher than your input. Your medium is off balance. I'd only use calmag if your using RO. Tap seems to be sufficient most of the time with H&G USUALLY USER ERROR. VPD is super off which I use as a guideline some beg to differ the importance.

Hope this helps

 

[Hellavated]

I was doing less strength more feeding and now have corrected with more water per plant. I just didn't wanna over water or over feer and I seem to have under done it. Haha I doubled up quantity with same strength, 4 ozs of water nutrient once a day in solo cups. Plants seem to be on track now and I'll post pics when I'm home.

 

[GuyManDude]

i've never run coco without adding perlite. when it's wet, it's very wet and doesn't give much space for oxygen to get to the roots

 

[SamsonsRiddle]

i never have problems with overwatering once the roots are established in coco. that size plant in that size cup means they are established.

i agree with the guy above and cringed when i saw the last picture where the coco was crispy dry on top. coco, from my experience, likes to go from wet to damp and only like a little dryness when fresh tansplanted. When coco dries out, the sodium level goes through the roof. I'm not sure if I said that right, so i guess look it up.

 

[Hellavated]

I noticed my ppm of runoff be close to 1200ppm! So I gotta flush next feed and move on from there.

 

[mdgg4]

I noticed my ppm of runoff be close to 1200ppm! So I gotta flush next feed and move on from there.

Your growing in coco my brother why flush? Never do that unless your ready to chop. Also do not worry about your runoff ppm in coco as the cation exchange will have it all over the place. Seems like you have a classic Mag deficiency not calcium. Try adding some Epsom salts to your mix. If you flush do not use plain water, try flushing with a 300 ppm mix with about 175 of it coming from cal/mag.

PEACE!

 

[GuyManDude]

I noticed my ppm of runoff be close to 1200ppm! So I gotta flush next feed and move on from there.

yes once roots are established you can water the hell out of it. But not until then.

1200 isn't bad depending on what nutes you are using. I run AN and my normal feed 1s about 1200 ppm. Feed, water, feed water, etc.

 

[trucker]

what is vpd in #6

 

[mdgg4]

Vapor Pressure Deficit

I believe that's the proper terminology, correct me if I'm wrong.

PEACE!

 

[mdgg4]

i've never run coco without adding perlite. when it's wet, it's very wet and doesn't give much space for oxygen to get to the roots

If root mass is established it is very hard to overwater, but only if roots are established. If you have a vigorous root system it will dry out really fast with perlite added. Fully saturated coco holds already 20%-25% oxygen more than enough for roots to thrive. My best runs and runs of fellow members perform better in straight coco. There is nothing wrong with adding perlite just be prepared to water more often.

PEACE!

 

[mdgg4]

Again no plain water with coco until flush unless you want to fuck your cation exchange. Always flush with diluted nutes. 1200ppm in coco is actually high, you run the risk of lock out and small buds. I try not to exceed 700ppm seems to be sweet spot. If you keep ec low you don't have to flush ever, until harvest time that is.

PEACE!

 

[Hellavated]

What would make base level runoff be wrong? As in I used new Coco for transplant, tested and PH runoff was 6.5 up from the 5.9 feeding. Also there are a couple black spots seeming to be mold on cubes, can I just hit then with h2o2 dilution? And worst, in one picture is a picture of a branch with what I saw was frosty or thought to be at least. That's a clone cut from a female, so I don't know how that could have been possible? They were under t5 18hrs (8 bulb, 4 were off) and just recently got out under 315 Lec. Confused. Also have some weird mangling/twisting of branches, don't know if that is a possibility of accidently flower/revel or PH problems.

 

[mdgg4]

Don't worry about your base level in coco. As long as your solution ph is on point going in, I try to keep my solution ph between 5.7-6.2. Because of the cation exchange your coco will hold and release different anions to try to keep its balance that's why ph change and ec rise in coco runoff. As far as mold I don't root in rockwool so to be honest don't know but I would assume a little peroxide would work.

PEACE!

 

[Hellavated]

Updates

Updates

So it looks like for some reason the girls decided it was time to flower, I had a momentary problem with lights turning off (I think maybe a couple hrs). Now I have problems with preflowers and purplish stems. They're also accompanied by yellow spots. I once over the plants with a microscope looking for pests and its not pests. PH of nutrients @ 5.8 runoff around 6.2.

 

[Chimera]

Your pH is too low because you don't have enough medium and the salts are crashing the pH, repot into real pots an compare the pH of your runoff water to that of what is going in.