Need help to find out if is root rot

trooper55

Well-Known Member
Been a long time since I did an areo grow. Doing 1 min on 6 to 7 min off. The one on the left seems to wilt if i go 1 on 5 off. I am using botanicare and am using liquid karma i know that can make the roots a little darker. They dont feel slimy butim unsure on that. I have hydrogaurd in the rez. Rez temp has been 68 to 72 now with iceprobe its down at 63. Ph is 5.9 6.1 meter is a little wanky have a new one coming. These are the mothers for a start so i. Scared lol.
 

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ToFarGone

Well-Known Member
I second @Renfro for the longer off time. You should have more secondary roots. Personally not a big fan of Low pressure aero roots never seem to thrive like in DWC. I had peppers in a system before I just said fuck it and threw them in a bucket
 

trooper55

Well-Known Member
Ok, ill bump the off time up to 9 min see what i get. And could i change them over to dwc without killing them?
 

Renfro

Well-Known Member
And could i change them over to dwc without killing them?
TBH I would want to make sure the roots are good first. You have any pics of the top of the plant? It could just be the hydroguard bacteria establishing a culture on the roots, or it could be something else. Do the roots pull away easy or are they crisp? Do they smell like carrots (good)?
 

Renfro

Well-Known Member
Well poor root health can often display itself as a nutrient deficiency. Hard to tell for sure with that blurple lighting but I see mag def on the first pic, perhaps calcium on the last. You using RO water? Whats your PPM running? Whats your feed in mL per gallon? In hydro I prefer a pH of 5.7 - 5.8.
 

trooper55

Well-Known Member
last ppm was 1800, running distilled water, ph is right around 5.8 - 6 like i said new meter is on the way. and ill get photos in light light.
 

Renfro

Well-Known Member
last ppm was 1800
1800 PPM at what scale? (conversion rate from EC...)

That seems really strong. Are you sure about the meter being calibrated?

I say this because 1800 PPM seems strong. Even at a 0.7 scale thats pretty rich with an EC of 2570 microsiemens, I would expect some tip burn.

I hesitate to say add anything when the PPM is so high, perhaps cut something down a little and add some calmag.
 

trooper55

Well-Known Member
I cant say the that i know the scale or trust the meter. I bought a 4 in on meter that will be in monday. I am going to read your thread about how to calculate that. And is distilled water ok to use.
 

Wastei

Well-Known Member
Drop the organics. Liquid Karma is maybe good for running DTW tables but I see little reason for using Liquid Karma in recirculating Hydroponics.

I get better results with foliar feed and I don't really want to destroy what's good about Hydroponics. What you do is removing as many variables as possible to get rock stable PH. Keep the rez and rootzone clean and focus on surface tension. Biofilm should not exist in a Hydroponic system. When you have got a basic understanding of how Hydroponics work you should see no reason to use Organics. It will only give you more cleaning work, pH fluctuations and bad bacteria cultures.

I use bleach (3% Sodium hypochlorite) to run 0,5ppm residual. Why everybody insist on running enzymes and other additives growing Cannabis in Hydroponics I think is just a result of marketing. Sterility and a Complete plant food is all that is needed.

24/7 spray/pump time is ok for LPA. I don't think there's anything wrong there. I would run it with tighter intervals than you currently do.
 
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trooper55

Well-Known Member
Drop the organics. Liquid Karma is maybe good for running DTW tables but I see little reason for using Liquid Karma in recirculating Hydroponics.

I get better results with foliar feed and I don't really want to destroy what's good about Hydroponics. What you do is removing as many variables as possible to get rock stable PH. Keep the rez and rootzone clean and focus on surface tension. Biofilm should not exist in a Hydroponic system. When you have got a basic understanding of how Hydroponics work you should see no reason to use Organics. It will only give you more cleaning work, pH fluctuations and bad bacteria cultures.

I use bleach (3% Sodium hypochlorite) to run 0,5ppm residual. Why everybody insist on running enzymes and other additives growing Cannabis in Hydroponics I think is just a result of marketing. Sterility and a Complete plant food is all that is needed.

24/7 spray/pump time is ok for LPA. I don't think there's anything wrong there. I would run it with tighter intervals than you currently do.
Ok, do you have a grow journal or more info on what you run for nutes and process? Im willing to try it out this is nerve wracking
 

ToFarGone

Well-Known Member
Here’s my problem with LPA if your new your trying to sort out nutrient strengths while trying to sort out spray timing at the same time and as @Renfro mentioned shitty roots can manifest themselves as nutrient deficiency’s.
 

Renfro

Well-Known Member
Sterility and a Complete plant food is all that is needed.
This can be very true.

Some people just don't have luck running sterile. Some people don't have luck running with bennies. Organic nutrients are terrible for DWC that I definitely agree on. I had the best luck running DWC with bennies but I did hate all the gunk that created in the system.
Here’s my problem with LPA if your new your trying to sort out nutrient strengths while trying to sort out spray timing at the same time and as @Renfro mentioned shitty roots can manifest themselves as nutrient deficiency’s.
As to his root health, that is definitely in question however it could just be gunk from the hydroguard and his nutrients. So long as the plant responds to nutrient corrections, doesn't have stinky roots, doesn't shed roots easily then I say sort out the feed, increase the OFF time on the aero and watch to see how the plants respond.
 

Wastei

Well-Known Member
Ok, do you have a grow journal or more info on what you run for nutes and process? Im willing to try it out this is nerve wracking
I run 0.9-1.2 EC Dyna Gro Foliage Pro and Bloom and Protekt

I mix it 30%FP and 70% Bloom. You could go for straight Bloom during the whole cycle. But I like a little more N for branching and flower sites.
I go a little lower during veg, maybe 0,6-7 EC

I add 1 ml bleach 3% Sodium hypochlorite eod to my 13,5 gallon rez. The only addatives I use is foliar spray of potassium sulphate with 2 weeks intervals. During veg I spray with Seaweed/humic acid once a week. I stop foliar at second week of flowering.

It's been two years since my last run but when I have a strain dialed in I like to introduce PGR's, but first I want a baseline of effect.

Currently using a DIY Aero setup with a lot of information and ideas coming from dstroy on this forum. Been up and running for a month soon :D . I will post a journal after everything is done.
 

trooper55

Well-Known Member
I fear they are not responding to the lower temps and correct ph. the roots seem to be getting darker ph did drop by .05 during the day and from 1600 to 1500 ppm. and the spots on the leaves are now showing up on new leaves.
 
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