kallaserves
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Hi Blue, I did sanitize everything, even took a 3 months break. res temp would be 75-76. The reason I am trying rockwool is because it didn't touch any of the previous pumps etc, I am hand watering them and find that they are also not too healthy which leads me to think it could be something in the air or perhaps my water source. Jungle boys sop calls for 150F for 3 hours after each harvest to kill all the spores in the air, maybe I need to try that.
Hi Cash, there's a little bit of leak near the top of the 3" cap which I should cover, but they were still growing ok. I've also tried to keep the daylight temp low at 73 and res would be at 70 but still the problem didn't go away. Right now before I even attempt to continue with the NFT method, I'd like to get the rockwool to grow healthy and even they're showing symptoms of stress (bottom set pics)
in that case it’s def your ph 7 is way to high for hydr
Your ph is too high for hydro bud.. I’m sure your in a nute lockout situation .. once you venture out the sweet spot range for prolong periods of time nutrients become unavailable.. this creating nute lockout. Which is most likely the culprit behind your unhealthy plants.( slow growth) for sure. Get your ph down and you should see a significant difference on growth…Hi Blue, I did sanitize everything, even took a 3 months break. res temp would be 75-76. The reason I am trying rockwool is because it didn't touch any of the previous pumps etc, I am hand watering them and find that they are also not too healthy which leads me to think it could be something in the air or perhaps my water source. Jungle boys sop calls for 150F for 3 hours after each harvest to kill all the spores in the air, maybe I need to try that.
Hi Cash, there's a little bit of leak near the top of the 3" cap which I should cover, but they were still growing ok. I've also tried to keep the daylight temp low at 73 and res would be at 70 but still the problem didn't go away. Right now before I even attempt to continue with the NFT method, I'd like to get the rockwool to grow healthy and even they're showing symptoms of stress (bottom set pics)
H202 and aquarium uv sterilizer circulator pump…eBay $30-40. That will stop all pathogens in reservoirHey all, been growing NFT low pressure aero for 2 year and plants grew big and strong without any issue.
Problem started to happen 6 months ago where the rooted clones would become unhealthy and roots end up turning brown and dying. You can see strands forming between roots and eventually they form cotton like structures on the roots. At this point they no longer take in nutrients and the ph will stay the same or might even go down(normally ec goes down and ph goes up)
Since then, I've had to toss out many harvests due to the same issue. Can't get any plants to uptake nutes and grow. I use the same ro 6g megacrop/gal formula as before; even tried Jacks321 to make sure that it's not the megacrop.
On my last run, I decided to switch up and do it in rockwool with jacks321. They seem to be a little better in rockwool. The roots could either be healthy or brown. For the plants with healthy white roots, upstairs still look stressed.
I'm 99% the same thing that's affecting the previous nft grows is also affecting the rockwool grow. I did bring a friend's cloner into the veg room but that's cleaned well. I also started to use Sounther Ag fungicide (concentrated hydroguard) 1ml/50gal around the time that the issues was popping up. Perhaps one of these 2 factors brought in cyanobacteria or fusarium, I'm not entirely sure if it's a pathogen or one of my other variables is off.
Lights - Samsung Led Strips 150-350 ppfd (veg) 22' away
Day Temp/Humidity - 80F/68%
Night Temp/Humidity - 73F/73%
RO filter - .05EC 7.0ph
Some solutions I tried to apply but no avail
Heisenberg's tea and no effect
Switch to Jacks321 from megacrop
Try some plants under 600 hps (200-400 ppfd, 3ft away)
I'm all out of ideas and am about to throw in the towel. Maybe you guys can point me in the right direction.
What are you measuring the ppfd with?Hey all, been growing NFT low pressure aero for 2 year and plants grew big and strong without any issue.
Problem started to happen 6 months ago where the rooted clones would become unhealthy and roots end up turning brown and dying. You can see strands forming between roots and eventually they form cotton like structures on the roots. At this point they no longer take in nutrients and the ph will stay the same or might even go down(normally ec goes down and ph goes up)
Since then, I've had to toss out many harvests due to the same issue. Can't get any plants to uptake nutes and grow. I use the same ro 6g megacrop/gal formula as before; even tried Jacks321 to make sure that it's not the megacrop.
On my last run, I decided to switch up and do it in rockwool with jacks321. They seem to be a little better in rockwool. The roots could either be healthy or brown. For the plants with healthy white roots, upstairs still look stressed.
I'm 99% the same thing that's affecting the previous nft grows is also affecting the rockwool grow. I did bring a friend's cloner into the veg room but that's cleaned well. I also started to use Sounther Ag fungicide (concentrated hydroguard) 1ml/50gal around the time that the issues was popping up. Perhaps one of these 2 factors brought in cyanobacteria or fusarium, I'm not entirely sure if it's a pathogen or one of my other variables is off.
Lights - Samsung Led Strips 150-350 ppfd (veg) 22' away
Day Temp/Humidity - 80F/68%
Night Temp/Humidity - 73F/73%
RO filter - .05EC 7.0ph
Some solutions I tried to apply but no avail
Heisenberg's tea and no effect
Switch to Jacks321 from megacrop
Try some plants under 600 hps (200-400 ppfd, 3ft away)
I'm all out of ideas and am about to throw in the towel. Maybe you guys can point me in the right direction.
First pic, is your main root being strangled by the pot/lid its growing through? Restricted flow will cause root rot, as it limits uptake of fluids.Hey guys, a little update.
I put the hydroguard in it for a week(2ml/gal). I find that while they're growing some new shoots, but eventually they become orange and also get sick. They're also not really eating or taking up enough water. Before I used hydroguard, they'd all become brown and no more new white roots come out. I suppose there is some benefit.
View attachment 1172927
I decided to cut them down and start new clones with hydroguard in from day1. Here are some pics of the webbing on the roots (this root hasn't been watered in 12 hours, getting ready to toss out)
View attachment 1172928
Apogee Sq-520Ok so in RW
What are you measuring the ppfd with?
NFT recirculate res is 10 gallons, 4ml/gal calimagic, Jacks 321, comes to 1.7 ec 5.5 ph. I have been using hydroguard 2ml/gal for the last weekAre you running a res for your nutes?
I do suspect a ph issue, in order to rule out my blue lab, I'm getting another one today and will be testing...I think I read your ph can drift a shit ton in a day and @Dirtbag is right about the ph out but the ph of the media is important.
previously I was giving full 1.7ec 5.5 ph mix to the rockwool without any runoff, but I decided to give it some .6ec mix to flush some salt out and I saw over 4EC, 6-6.8ph so there was definitely a build of up in the rockwool. Since then, I've given all the rockwool a light nutrient rinse.Use a syringe to draw directly from the bottom 1/4 of the RW and test it at multiple periods, eg right after watering and right before the next event to see how much it's changing in that period. I'm betting pretty significantly.
When everything was working before in NFT recirculate, New batch of nutrients could be 5.3 and overnight they will go up to 6.3, EC would go down and I know they've ate well and are growing. They were just robust and tolerated a lot more. The question is, do my symptoms match a high alkaline environment? (pics are of mother plants, woody stem, purple stem, red petiole extending to leaf, leaf twist, slow growth)I'm pretty certain you have an alkalinity issue and a very unstable ph.
Now no matter what I give, they don't drink water or take up EC. Initial good white roots do come out but after some time they become orange and get infected. If I were to cut open the rockwool, most older roots will look orange.On top of that you have a bacterial issue that's infecting the roots.
They get 4 second spray every 10 min so they're kept in a very humid environment. Rockwool is kept moistRoots exposed to air need to have very high humidity like 100% or they air prune and any damage is a vector for infection.
Just hydroguard 2ml/gal, 2tsp great white/10gallon currently. I have tried the great white before on its own and heisenberg tea to fight the problem in recirculate nft but they didn't do anything. Hydroguard does seem to make them hang on a little bit more with new root growth but eventually the new growth will also be attacked and turn orange.Are you using h202 or any root products include everything, enzymes, hydrogaurd, clear rez all that stuff.
NFT recirculate 4sec on/10min off 24 hours. Rockwool I hand water a 4x4 block about 100-200 ml a day when lights come on, drain to waste.Watering frequency and volume?
I completely agree with this statement. I do add .5ml/gal of protekt.Healthy roots and plants generally resist infection when it's not overwhelming silica is a good addition for both roots and plant to resist infection, heat and water stress.
NFT 10gal res does not change at all, infact ph can go down from 5.5 to 5.4 in 3 days if a new batch. Rockwool is dtwIn your res how much does the oh change in a 24hr period?
Thank you for the help man. Before all this happened, they were growing fast with vigour, everyday my 20gal res will go down .5ec and ph will go up to 6.2 and I'd have to phd again. I see the same root issue in rockwool as I see in the NFT rails. So the issue must be something that they both share.I have a few more things but start there.
Ok read this. Tied up for a lil bit here. But the ph drift is way to much over 24hrs. What form of silica are you using? Silicon dioxide I assume?Apogee Sq-520
NFT recirculate res is 10 gallons, 4ml/gal calimagic, Jacks 321, comes to 1.7 ec 5.5 ph. I have been using hydroguard 2ml/gal for the last week
Rockwool dtw, hand water from a 5gallon pail i'd mix, usually same formula as above.
I do suspect a ph issue, in order to rule out my blue lab, I'm getting another one today and will be testing...
previously I was giving full 1.7ec 5.5 ph mix to the rockwool without any runoff, but I decided to give it some .6ec mix to flush some salt out and I saw over 4EC, 6-6.8ph so there was definitely a build of up in the rockwool. Since then, I've given all the rockwool a light nutrient rinse.
When everything was working before in NFT recirculate, New batch of nutrients could be 5.3 and overnight they will go up to 6.3, EC would go down and I know they've ate well and are growing. They were just robust and tolerated a lot more. The question is, do my symptoms match a high alkaline environment? (pics are of mother plants, woody stem, purple stem, red petiole extending to leaf, leaf twist, slow growth)
View attachment 1173197View attachment 1173198View attachment 1173199View attachment 1173200
Now no matter what I give, they don't drink water or take up EC. Initial good white roots do come out but after some time they become orange and get infected. If I were to cut open the rockwool, most older roots will look orange.
View attachment 1173193
They get 4 second spray every 10 min so they're kept in a very humid environment. Rockwool is kept moist
Just hydroguard 2ml/gal, 2tsp great white/10gallon currently. I have tried the great white before on its own and heisenberg tea to fight the problem in recirculate nft but they didn't do anything. Hydroguard does seem to make them hang on a little bit more with new root growth but eventually the new growth will also be attacked and turn orange.
NFT recirculate 4sec on/10min off 24 hours. Rockwool I hand water a 4x4 block about 100-200 ml a day when lights come on, drain to waste.
I completely agree with this statement. I do add .5ml/gal of protekt.
NFT 10gal res does not change at all, infact ph can go down from 5.5 to 5.4 in 3 days if a new batch. Rockwool is dtw
Thank you for the help man. Before all this happened, they were growing fast with vigour, everyday my 20gal res will go down .5ec and ph will go up to 6.2 and I'd have to phd again. I see the same root issue in rockwool as I see in the NFT rails. So the issue must be something that they both share.
There are a few things I suspect could be causing this.
1. I switched from hydroguard to southern fungicide ag. I fed 1ml/res change of fungicide which gave a load of bacillus amy. That's around the time I saw root issues. since then, I'm only using hydroguard and this current batch of clones I'm introducing hydroguard(2ml/gal) from day1.
2. my ph pen could be problematic, I am able to calibrate between 7 and 4 but the way and speed it moves is a bit odd. It will read 6.0 in container A. but if I put it in container B, it will go to 5.0. Now if I put it back into container A, it will stay around 5.1 for 10 minutes. buying a new one to test today.
3. My RO comes to .02ec and 6.0ph, when everything worked it was 7.2 ph, not sure if something in my water supply changed or my PH pen has issues.
ruled out nutes, tried both jacks and megacrop
Currently it's 82F 80% at canopy(LST is 79-80) and room is at 78F 83%. My Co2 meter shows it go down from 1200-360 in a period of 10 hours.
Allow some dry back you don't want them wet all the time but you definitely don't want em to dry... I would start by feed more volume so your getting good runoff like 20% for now and check the dryback between cycles.Thanks for the quick reply Aquaman. I will do what you recommend and give more watering in rockwool with 1.2ec. Would you water it even if it's still pretty saturated? My fear is the roots drowning in rockwool.
This is the dyna protekt, I find that it just buffers the ph and makes the solution .2 higher.
View attachment 1173224
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