Diagnosis my plant! Root or stained?


This is my first indoor grow and after following alot of advice on this forum it was going great.

Last week I noticed spots on the leaves. I checked the roots then and they didn’t look out of the ordinary. However today I checked again and this is what I found.

I’ve read that roots stain from the nutrients. They dont have a smell to them and don’t appear slimy. I’ve changed the reservoir to plain water that has sat overnight and cal-mag and Current Cultures UC roots as a substitute for hydroguard.

There are no light leaks. I have two airstones with a decent amount of bubbles. The tent usually sits around 22 - 24 (71-75) degrees and I have the intake fan close to the tank so its got the little extra cool on it.

I’m lost as to what to do next.

Strain: jack herer auto

Nutrients: the canna range veg, rhizotonic, cannazym, canna boot and cal mag all at just above half doses

Ph: between 5.8 to 6

PPm: around the 750 mark before the flush

Light: 1000w

Humidity: 45 - 54

Ventilation system; 4inch exhaust & inline

Humidifier: 1L

Welcome to the forum, great people around to help you.

IMO it’s wind burn.

Is your fan blowing through the plant? The fans needs to be blowing over the top, think of a gentle breeze.


Welcome to the forum.

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Wow. Had never heard of wind burn before. I’ll adjust the fan when I’m done with work today. What do you think about the roots?

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You want the plant to shake a little with the breeze, it strengthens the stem.

IDK about your roots, mine sit in soil :slight_smile:

I’m seriously worried it’s root rot. The root system has doubled in size since I last looked at it but the brown tinge is a worry.

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Unfortunately I don’t know any hydro growers. Wait awhile see if anyone else responds, have you looked through the forum? I use the search feature all the time.

What is your water temperatures?
What nutrient line are you using?
I wouldn’t be that worried as long as they’re not slimy and don’t smell. Hydroguard comes highly recommended to resolve any root issues. As long as temps are inline.

I know enough to be dangerous really. We can tag them after

Your hydro growers to tag are:
@ Myfriendis410 @ peachfuzz @ TDubWilly and @ Bogleg

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Yeah you got something going on there def looks like some slime starting to form . I’m not a hydro guy so I can’t help with a treatment but @Covertgrower has you covered he’s given you the tags to the Calvary :v:

But I didn’t. I spaced the @ symbols so it didn’t tag them. I was waiting for the response. I didn’t want to unnecessarily tag them yet. But the OP at least knows who to tag.

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I just noticed that lol thought it was a accident :joy:

I never make… oh nevermind. Lol.


Temp is around 19 - 21 degrees Celsius. I’m using the canna line of nutrients as well as current culture as a substitute for hydroguard since it’s difficult to get down under and professor greens cal - mag. I’ve trimmed the affect leaves just to be sure. I’ll update when I get home today. You’ve got me worried it’s the easy onset of root rot.

@Myfriendis410 @peachfuzz @TDubWilly @Bogleg

Tag them like that?


Yes that’s how you tag someone. I think you have nothing to worry about, canna line has a bit of a brown color to it. (I have some) your temps are in line, so I think you’re in good shape.

The amount of air is concerning. It should look like a rolling boil. Basically a lot more air than you think you need, and you’re there. Lol

Ok firstly, you guys have been so helpful. It’s quite surprising how friendly and efficient everyone is here.

I’ll get bigger airstones today and adjust the fan settings then reinstate the nutrients in a day or so? How long should I let it flush for do you think?


If they’re not either, they’re pretty much banned.

I think if you don’t over do it you’ll be okay.


Let’s use this Support Ticket if you don’t mind just to fill in the gaps:

COPY/PASTE the below list into your forum post.

Answer these simple questions the best you can.
If you do not know, or do not use something; Just say so; Or post
NA (non applicable)

What strain, Seed bank, or bag seed
Age of plant
Method: Soil w/salt, Organic soil, Hydroponics, Aquaponics, KNF
Vessels: Pots, Grow beds, Buckets, fabric pots
PH and TDSof Water, Solution, runoff (if Applicable)
PPM/TDS or EC of nutrient solution if applicable
method used to measure PH and TDS
Indoor or Outdoor if indoor, size of grow space
Light system LED, MH/HPS/CMH/Fluorescents, or other
Actual wattage draw of lights
Current Light Schedule
Temps; Day, Night
Humidity; Day, Night
Ventilation system; Yes, No, Size
AC, Humidifier, De-humidifier,
Co2; Yes, No
If growing Hydro some additional questions:
DWC? RDWC? Autopots? Ebb and Flow? Other?
Distance of liquid below net pot (DWC)
Temperature of reservoir
TDS of nutrient solution

Always try to upload a clear picture in white light of any issues you may have to allow the community to assist you.

This is more targeted towards Hydro growers so bear with me so it’s in one place. As @Covertgrower asked; water temps are important for O absorption as well as protection from pythium. I think you’re okay but let’s make sure?

Strain: Jack Herer auto (Aussie baked beans)
Age of plant: 6 weeks
Method: Hydroponics (DWC)
Vessels: Bucket (16L but I only use about 9 Litres. Duel air stones)
PH and PPM: pH always around the 5.8 - 6. PPM always in the reccomended range for the grow stage( I had it around 750 before the flush) measured using a pH & PPM reader
Grow space: 90 X 50 X 1.6
Light system: LED. 1000w. Green fingers duel veg and bloom
Actual wattage draw of lights: unsure
Current Light Schedule: 18 & 6
Temps: day between 21 - 24. Nights about 20 - 23
Humidity: Day 40 - 50 Night around the same
Ventilation system: Yes
Dehumidifier: Yes. 1 litre
Co2: No
Temperature of reservoir: 19 - 21
TDS of nutrient solution: unsure

Hope that helps. I’ll be changing the res out today and post the pics

This is going to be a problem if it isn’t already. A larger amount of liquid will help to maintain conditions longer: in flower you will be changing and filling the rez daily. PH swings are also common.

If you are using a net pot I would strongly suggest, at the least, to rig up a larger plant rez. Black totes work well for this and are cheap. A 27 gallon tote would leave you with around 18 gallons of liquid to work with. That will buffer nicely.