Root Rot Problem, need some advices.

tbh doesnt look like root rot at all. plants look fine, except maybe for some cal-mag deficiency (seen from the brown spots). those yellow roots are the result of light penetrating into the water tank.

if indeed if a case of bud rot changing water won't do anything. you need to take out everything and sterilize everything (tank, airstones, tubes etc). otherwise bud rot will come up again.

for sterilization you can use H2O2 (hydrogen peroxide) or bleach (but be sure to was heverything very well after).

If you bring the temperature of your water down, and consider adding a root inocculant (highly recommend hydroguard) if you cannot keep the water cool consistently.

Vincent in Blue said:

Hi, I am a grower in China, sorry my English is bad, I know marijuana is not very popular here, but I just love it, and it is my first post.

Problem: I am suffering the problem of root rot, every time I changed the water, my root was going to rot.

Mistakes I have found since now: 1. Light penetrate the tank slightly, 2. I full the tank when first time changing water, but second time I half the tank, root rotted still. So sad. Can I say the 'F' word?

Here are some pictures for you to laugh:

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Fertilizer: Canna Aqua production line, which includes[Aqua vega A&B, RHIZOTONIC, CANNAZYM, CANNABOOST], and now I think it is a bad brand and I am going to use Advanced Nutrients for the next time, because I have hope on 'Voodoo juice'; Many experts had their huge amazing root balls with 'Voodoo juice', according to youTube videos. I think I need Bacteria, a lot of Beneficial Bacterias.

Seeds: Freebies from Nirvana, its were for test, so I used the freebies;

Temperature: air 20-25, water 20;

Water: Material Water with 35 PPM;

Air Pump: huge ones, 8W*2, kind of expensive;

Water Tank: 20 Liters for three plants;

Light: 250W HID;

Click to expand...

Glad to see some Chinese interest! Very cool.

I'll mostly repeat what was said here:

* Lower your temps maybe (20 C is fine, but it does invite some pathogens)
* Use air stones (for aquarium) if not already.
* Most importantly- beneficial microbes! Voodoo Juice, Great White, Hydroguard- any (or all) of them.
* Stay away from organics (only inorganic nutrient salts) until the problem is resolved. The base AN line should do fine.

DrGhard said:

tbh doesnt look like root rot at all. plants look fine, except maybe for some cal-mag deficiency (seen from the brown spots). those yellow roots are the result of light penetrating into the water tank.

if indeed if a case of bud rot changing water won't do anything. you need to take out everything and sterilize everything (tank, airstones, tubes etc). otherwise bud rot will come up again.

for sterilization you can use H2O2 (hydrogen peroxide) or bleach (but be sure to was heverything very well after).

Click to expand...

It also could be an algae, H2O2 might be good to 'reset' things before adding microbes, if you're going that route.

Yesdog said:

Glad to see some Chinese interest! Very cool.

I'll mostly repeat what was said here:

* Lower your temps maybe (20 C is fine, but it does invite some pathogens)
* Use air stones (for aquarium) if not already.
* Most importantly- beneficial microbes! Voodoo Juice, Great White, Hydroguard- any (or all) of them.
* Stay away from organics (only inorganic nutrient salts) until the problem is resolved. The base AN line should do fine.



It also could be an algae, H2O2 might be good to 'reset' things before adding microbes, if you're going that route.

Click to expand...

thank you, I am doing another round with your advices, and you are really kind for giving me the such lots of advices, I appreciate that very much.

https://www.rollitup.org/t/white-widow-diary.927627/

this is current posting, please check it.

Logan Burke said:

If you bring the temperature of your water down, and consider adding a root inocculant (highly recommend hydroguard) if you cannot keep the water cool consistently.

Click to expand...

Yes, Sir!!!! you were right!

https://www.rollitup.org/t/white-widow-diary.927627/

this is my latest grow, please have a check.

DrGhard said:

tbh doesnt look like root rot at all. plants look fine, except maybe for some cal-mag deficiency (seen from the brown spots). those yellow roots are the result of light penetrating into the water tank.

if indeed if a case of bud rot changing water won't do anything. you need to take out everything and sterilize everything (tank, airstones, tubes etc). otherwise bud rot will come up again.

for sterilization you can use H2O2 (hydrogen peroxide) or bleach (but be sure to was heverything very well after).

Click to expand...

thanks, bro.

https://www.rollitup.org/t/white-widow-diary.927627/

this is my latest trying, please have a look.

Hydroguard is much more effective than H202 in my opinion, however it is just that, MY opinion. Happy growing.

Logan Burke said:

Hydroguard is much more effective than H202 in my opinion, however it is just that, MY opinion. Happy growing.

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I also tend to go the 'live' vs 'sterile' route. Hydroguard + great white can do wonders. Great white is better for root-area applications (on the rockwool/media), hydroguard is great is for keeping the solution clean.

I couldn't agree more! Good to know about that Great White though; the only tried and true good root inoculant I knew of was hydroguard, so that's good to know! Thanks Yesdog!

Logan Burke said:

I couldn't agree more! Good to know about that Great White though; the only tried and true good root inoculant I knew of was hydroguard, so that's good to know! Thanks Yesdog!

Click to expand...

Not a problem . The bacteria in Hydroguard (bacillus Amyloliquefaciens) is a really great bacteria for hydroponic solutions. It keeps the solution clean by living off of the organics in the rez, plus produces an antibiotic that helps fight off other bacteria. It can also live freely in the rez. The great white has lots of good bacteria that will also end up in your rez, but the main benefit is the fungus in the root zone around the media. The mychs and trichoderma don't do well in moving solution and need solid media + roots to really thrive, moist and well oxygenated. This works best when the grow media is periodically moist- so for DWC, this means drip, or enough bubble power to keep the media moist from below. Or if you're using rockwool and f+d, make sure the rockwool can soak during the flood. If it's too dry, then roots won't grow there, and the fungus will die.

Top-down application of a solution to the root crown works good. I've been using distilled water with something in it mixed with great white. Plain water isn't great for em. I use a bit of floralicious+, or if you do tea, you can use that, or just use a bit of cal/mag, humics, superthrive, kelp, you don't want it too strong, but you don't want in pure/plain. It's also the only reasonably (somewhat) responsible way to use organics in hydro. IF YOU HAVE ROT DON'T USE ANY ORGANICS. You just want to apply some semi-activated great white, and maybe (if you live dangerously) some super dilute carb source like F+ or superthrive, or just some nutrient solution, room temperature. Shake for a bit, let sit for just a few minutes, then inoculate top-down near the root crown. You want the fungus to wake-up/activate a bit before you apply, otherwise they might go dormant again as spores and eventually wash out, or if the water is totally hypotonic (nothing in it), it might kill the bacteria and fungus in the gw when you premix. You can also just sprinkle the shit on the grow media every now and then.

What I'm trying to say is, take Great White, and slather the shit literally everywhere. It's golden (costs about as much as gold too). I have tortured so many plants and just fixed it with great white.

I've also been using great white for clones with great success so far too, been mixing it with dry (insoluble) rooting hormone and scratching up the cuttings a bunch and rubbing the stuff in there. The semi-insoluble paste formed with the rooting compound holds on for a day or so. Then adding some extra to rockwool for propagation, or putting the cuttings directly into the bubble cloner. I'm literally just spreading the shit everywhere.

EDIT: great white or orca, i cant remember what the difference is, but they're *mostly* the same mix. can also do subculture B + M.

Yesdog said:

EDIT: great white or orca, i cant remember what the difference is, but they're *mostly* the same mix. can also do subculture B + M.

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Orca has zero Trichs. I wanted to use it for that reason, but somebody(I think it was here at RIU) reported that they brought Orca to a scientist friend, and he found very little living bennies in it. I can't confirm it, but Orca just might be snake oil.

I have four seperate flowering rooms, so I'm doing side by sides with GW, Recharge from Real Growers, and GW + Hydroguard. I'll post results in a couple months. So far, all 3 methods are cruising along fabulously, though clones do seem to be a bit sensitive to the Recharge.

Johnny Lawrence said:

Orca has zero Trichs. I wanted to use it for that reason, but somebody(I think it was here at RIU) reported that they brought Orca to a scientist friend, and he found very little living bennies in it. I can't confirm it, but Orca just might be snake oil.

I have four seperate flowering rooms, so I'm doing side by sides with GW, Recharge from Real Growers, and GW + Hydroguard. I'll post results in a couple months. So far, all 3 methods are cruising along fabulously, though clones do seem to be a bit sensitive to the Recharge.

Click to expand...

Awesome! Excited to see the results. So much snake oil around these parts to sift through lol. I guess it would make sense that orca wouldnt have good fungus amount, everything ive ready says that at least mychs will just die in solution over time, only hope is to dry em out as spores.

Ooh, but I do have some moderate proof that GW has at least some fungus- I did a kratky system with a clone transplant (static water culture) and packed the rockwool with GW. After a few days the roots popped out of the bottom (really healthy looking clone and roots), and i noticed there was this thread like suspension right below the rockwool with tiny brown clumps in it. I poked at it with a pen cap and it was some kind of translucent structure that moved all together. The whole thing might rot into a mess soon (little faith in kratky), but it really looked like mycelia forming.

Ill be using Rockwool for the first time to germinate/root my seedlings. Would you recommend adding Great White or Hydroguard to the water Ill be applying from the top down? My bubblers are plenty powerful enough (120lpm, seven 5 gallon buckets) to keep the media moist, but I still try to water top down for there first few days taking root in the hydroton. Great info guys thanks

https://www.rollitup.org/t/white-widow-diary.927627/

DrGhard said:

tbh doesnt look like root rot at all. plants look fine, except maybe for some cal-mag deficiency (seen from the brown spots). those yellow roots are the result of light penetrating into the water tank.

if indeed if a case of bud rot changing water won't do anything. you need to take out everything and sterilize everything (tank, airstones, tubes etc). otherwise bud rot will come up again.

for sterilization you can use H2O2 (hydrogen peroxide) or bleach (but be sure to was heverything very well after).

Click to expand...

https://www.rollitup.org/t/white-widow-diary.927627/
this is my current work, pls take a look.

https://www.rollitup.org/t/white-widow-diary.927627/
this is my current work, pls take a look.

Logan Burke said:

Ill be using Rockwool for the first time to germinate/root my seedlings. Would you recommend adding Great White or Hydroguard to the water Ill be applying from the top down? My bubblers are plenty powerful enough (120lpm, seven 5 gallon buckets) to keep the media moist, but I still try to water top down for there first few days taking root in the hydroton. Great info guys thanks

Click to expand...

Yesdog said:

Ooh, but I do have some moderate proof that GW has at least some fungus- I did a kratky system with a clone transplant (static water culture) and packed the rockwool with GW. After a few days the roots popped out of the bottom (really healthy looking clone and roots), and i noticed there was this thread like suspension right below the rockwool with tiny brown clumps in it. I poked at it with a pen cap and it was some kind of translucent structure that moved all together. The whole thing might rot into a mess soon (little faith in kratky), but it really looked like mycelia forming.

Click to expand...

https://www.rollitup.org/t/white-widow-diary.927627/
this is my current work, pls take a look.

https://www.rollitup.org/t/white-widow-diary.927627/
this is my current work, pls take a look.

Johnny Lawrence said:

Orca has zero Trichs. I wanted to use it for that reason, but somebody(I think it was here at RIU) reported that they brought Orca to a scientist friend, and he found very little living bennies in it. I can't confirm it, but Orca just might be snake oil.

I have four seperate flowering rooms, so I'm doing side by sides with GW, Recharge from Real Growers, and GW + Hydroguard. I'll post results in a couple months. So far, all 3 methods are cruising along fabulously, though clones do seem to be a bit sensitive to the Recharge.

Click to expand...

https://www.rollitup.org/t/white-widow-diary.927627/
this is my current work, pls take a look.

We understand Vincent; thanks Ill be sure to.

Logan Burke said:

Ill be using Rockwool for the first time to germinate/root my seedlings. Would you recommend adding Great White or Hydroguard to the water Ill be applying from the top down? My bubblers are plenty powerful enough (120lpm, seven 5 gallon buckets) to keep the media moist, but I still try to water top down for there first few days taking root in the hydroton. Great info guys thanks

Click to expand...

Yea, i'd maybe only apply a little while they germinate (bennies can 'take over' a seed before it roots some times, which isn't great), but if you germinate in a paper tower or something first, yea just slather the RW with GW where the tap root will go, and put the germ in there, should be all set at that point. With the taproot there, the bennies can more properly take on their rhizosphere roles, and the RW gives them somewhere to hang out until there's more to do.

Much appreciated Yesdog! You're the man! Haha.