Wth is going on...

Have2

Well-Known Member
Hey! :)

First time I see this... roots are pretty white when they exit the net pot and when they touch the water, they become a little brown... Now at second week of veg... First week, everything went well except I didn't raise the humidity quickly enough... VPD was way too high for veg plants (around 1.4-1.5) They were stunted a bit. I looked at the roots and roots were browns then raise humidity. I didn't wash way much the clays before putting the clones in... But I'm not sure why they would come out white then turn brown once in the water.

011.jpg and 012.jpg were 2 days after I raised the humidity to get a VPD of 1.05~... All white roots shooting...

003 and 001 - 5 days after I raised the humidity... Plant is healthy, could be a bit better but raising the ppm slowly... Should be fixed within 2-3 days at most.

It was was root rots, I'm pretty sure the plant wouldn't look like this, it will all be dull and wilting... I'm maybe wrong of course.

Any idea? Not enough air in the water? I'm using 4.4 liters of air for a 4 gallons bucket... Maybe there's around 2.5-3 gallons top... Should be sufficient air input. I always recycle my air stone... I let them sink in the system when I do a bleach cleaning... let run the system for 12 hours with bleach in it, then flush, add water, let the system circulate, flush again, fill with fresh water... flush, vacuum... Then I boil the air stone for 30 minutes in water and vinegar for 30 minutes then rinse them with fresh water.

Thanks for any help, first time it happens and i'm puzzled... Mother's roots are ultra white and cleaning the same way the system... :bigjoint:

PPM @ 600.
Temp 78
Humidity 70%
 

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Have2

Well-Known Member
My first inclination is to purchase a new stone
Those aren’t that expensive
I'll order new ones on next cycle... Just curious how they will further go... Plants are thriving at the moment... If it goes south ( root rot )... I'll chop them and restart!
 

Have2

Well-Known Member
Roots are not thriving
Yeah... But what it could be? Pathogens? Clogging? If it's clogging, changing one would give me a pretty good idea but it seems it's on every plant so I tend to believe it's inclined to pathogen... But how can it happens in one week? I go sterile way, using uc roots... Flushing each 5 days and replenished with fresh nuts and uc roots... Water temp never exceeded 69-70F.

I forgot to mention, that I played with water level a bit... It was higher, I don't know why I decided to raise the float valve a bit.. but back to "normal" space between water and the bottom of the net pot...
 

Have2

Well-Known Member
Nute stain?
I don't know about it... It's the first time I reach 600 ppm... Never been able to past the 450 mark... Probably because of high temperature... Plants were drinking a lot... Trying to drop temperature and see how it goes... And for now, big difference is ppm strength.
 

Herb & Suds

Well-Known Member
Yeah... But what it could be? Pathogens? Clogging? If it's clogging, changing one would give me a pretty good idea but it seems it's on every plant so I tend to believe it's inclined to pathogen... But how can it happens in one week? I go sterile way, using uc roots... Flushing each 5 days and replenished with fresh nuts and uc roots... Water temp never exceeded 69-70F.

I forgot to mention, that I played with water level a bit... It was higher, I don't know why I decided to raise the float valve a bit.. but back to "normal" space between water and the bottom of the net pot...
Clogging causes low aeration
Low aeration leads to minimal roots
You have had successful runs in the past ?
I wouldn’t chase anything else unless it’s a pump issue
 

Have2

Well-Known Member
Mother ge
Clogging causes low aeration
Low aeration leads to minimal roots
You have had successful runs in the past ?
I wouldn’t chase anything else unless it’s a pump issue
I never had root rot... Aeration seems fine... A lot of bubbles... I decided to go with lower temp because of herms... But I think it's more related to strain that my environment... All my crops were a success. Except every start... I was following the recommended charts but they are crap... But that's another subject.

Maybe it's time to get back to my usual temp! Eheh
But I'm curious on how they will develop even if roots are brown a bit.
 

Hollatchaboy

Well-Known Member
Oh wow, they look alike! And as I said, I never been that high in ppm... Need to be that high with 79-80°F and rh @ 67-70. Else deficiencies...

I think I'll raise my temp and drop the ppm a bit...
I ran the Lucas formula in dwc. Full strength. Start to finish. Ppms usually around 1300 on the 7 scale. The strains I ran, loved it. Plants were always nice and green.

What do you use as a sterilize/preventative?
 

Have2

Well-Known Member
I ran the Lucas formula in dwc. Full strength. Start to finish. Ppms usually around 1300 on the 7 scale. The strains I ran, loved it. Plants were always nice and green.

What do you use as a sterilize/preventative?
What is your air input? Liter/min. I'd never be able to reach 1300 (even on a 700 scale)! Last cycle, I was maxing our at 460-480ppm, anything higher resulted in tips burning...

As for preventive, I use hypochlorous acid (uc roots) at 5-6ml/gal each 5 days.

And sterilize with bleach between cycles 40ml/gal.
 

Hollatchaboy

Well-Known Member
What is your air input? Liter/min. I'd never be able to reach 1300 (even on a 700 scale)! Last cycle, I was maxing our at 460-480ppm, anything higher resulted in tips burning...

As for preventive, I use hypochlorous acid (uc roots) at 5-6ml/gal each 5 days.

And sterilize with bleach between cycles 40ml/gal.
I dunno. I just ran a few dual outlet air pumps with four soda can airstones, and a disk at the bottom middle.

Maybe it has something to do with using the Lucas formula? I dunno.

Uc roots is expensive. Clorox bleach is much cheaper, and better imo. Pool shock is even cheaper, and just as good, if not better than bleach.
 

Have2

Well-Known Member
I dunno. I just ran a few dual outlet air pumps with four soda can airstones, and a disk at the bottom middle.

Maybe it has something to do with using the Lucas formula? I dunno.

Uc roots is expensive. Clorox bleach is much cheaper, and better imo. Pool shock is even cheaper, and just as good, if not better than bleach.
Uc is expensive... I know, that's why I do my own. Way cheaper, always fresh... I think the hypochlorous acid looses it's concentration at a rate of 2-3%/day... So when you receive a 5 gals that is all dusty... I'm wondering what is the real rate left...

And as for bleach vs hypochlorous acid... HA needs less concentration (around 80x less) than bleach... And you can even rinse your salad with it and eat it without being dangerous. Also, no deposit like bleach does.

But yeah, they charge crazy prices for such a basic product that costs nothing to do.

As for ppm and Luca's... Nitrogen is nitrogen, phosphorus is phosphorus... The more you aerate, the less ppm you need. That's why I asked about the air input rate.
 

Have2

Well-Known Member
Update...


In the cloning system... All roots are white.. ppm at 290-300.
Mother's system, 420-430ppm and roots start to become brown a bit... And bloom system, they started to turn brown when I reach the 400-450ppm.. now at 680...

So, it gets brownish when going from 300 to 420-430...

All plants are thriving...

I really think it's nutrient's stain.
 

Hollatchaboy

Well-Known Member
Update...


In the cloning system... All roots are white.. ppm at 290-300.
Mother's system, 420-430ppm and roots start to become brown a bit... And bloom system, they started to turn brown when I reach the 400-450ppm.. now at 680...

So, it gets brownish when going from 300 to 420-430...

All plants are thriving...

I really think it's nutrient's stain.
I'm pretty sure it's nute stain as well. I've seen it quite a bit. Root rot gets a slimy look to it.
 
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