Root Issue In DWC? (Root Rot?)

I could use some opinions on this. Some roots seem to be getting grey/black?

Pretty certain the leaf damage was from foliar spray burning the leaves during lights on. But it could be related to my roots?

PPM 830 (ecx700) // 66F water temp (always stays 66 or 67F) // 5.6-6.0ph, try to keep it at 5.8

75F Room Temp // 30% RH (a little low.)

Nutes; Micro, Grow, Magnifical, Kelp.


... Should I bring the PPM Down to 700 and introduce H202?

Joint Monster said:

I could use some opinions on this. Some roots seem to be getting grey/black?

Pretty certain the leaf damage was from foliar spray burning the leaves during lights on. But it could be related to my roots?

PPM 830 (ecx700) // 66F water temp (always stays 66 or 67F) // 5.6-6.0ph, try to keep it at 5.8

75F Room Temp // 30% RH (a little low.)

Nutes; Micro, Grow, Magnifical, Kelp.


... Should I bring the PPM Down to 700 and introduce H202?

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The staining, general tan color is probably your nutes. GH's micro is known to stain. That one dark root I would probably cut out and hit with some light peroxide. Where is your calcium and magnesium? Even using the full trio of GH's nutes they still need cal-mag. You can make it at home(ask Google) or buy it. If you go the retail route, be careful. Some cal-mag solutions aslo have nitrogen and can cause a lockout.

Johiem said:

The staining, general tan color is probably your nutes. GH's micro is known to stain. That one dark root I would probably cut out and hit with some light peroxide. Where is your calcium and magnesium? Even using the full trio of GH's nutes they still need cal-mag. You can make it at home(ask Google) or buy it. If you go the retail route, be careful. Some cal-mag solutions aslo have nitrogen and can cause a lockout.

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Strike that just looked up magnifical still looks like cal-mag def. How much areyou using?

Joint Monster said:

I could use some opinions on this. Some roots seem to be getting grey/black?

Pretty certain the leaf damage was from foliar spray burning the leaves during lights on. But it could be related to my roots?

PPM 830 (ecx700) // 66F water temp (always stays 66 or 67F) // 5.6-6.0ph, try to keep it at 5.8

75F Room Temp // 30% RH (a little low.)

Nutes; Micro, Grow, Magnifical, Kelp.


... Should I bring the PPM Down to 700 and introduce H202?

View attachment 4816587
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When I ran DWC I used a small amount of this start to finnish and the roots stayed bright white.

Any beneficial bacteria in your mix? Hydro guard?

@User1534 No bennies - can cause biofilm in systems.

@bernie344
Roots Excelurator's ingredients are;
Roots Excelurator is comprised of:

1. Cold Pressed Norwegian Sea Kelp
2. Vitamin B complex
3. A proprietary seed extraction
4. Molasses and other ingredients
5. Beneficial microbial inoculants

My nutrient line already includes a kelp. I supplement my own vitamin b complex. Molasses and Bennies is a no-no in my system.

@Johiem Full strength nutes 6ml/gal (remo nutes) And you're right, most likely stained from the kelp.


I was partially hoping someone could confirm root rot or something else? I'm more curious as to the real cause behind the issue... (especially since most factors seem to be in good order.)

That dark part in picture 2 looks like root rot. However, it looks like your roots have recovered as evidenced by all the new white growth. As another has said I would cut out that dark part and keep adding the beneficial bacteria to your system.
As for nute strength if you are still in veg I wouldn't go much over 500ppm. When I run rdwc my ppm is never more that 800ish with explosive growth.

If your Rez temp is correct and I don’t see foam in Rez or slime on roots so with these few pics I’d say no pythium root rot.
Do you use tap water, what’s you waters numbers before nutrients added. Short answer your plant had issues of cal mag but new growth of 1 site looks fine, can’t see enough of plant to tell better.

Do your roots have any smell at all other then nutes

Love1Fear said:

Do your roots have any smell at all other then nutes

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Good question.

Hydroguard for white roots.