DWC Help!!! Pretty please

First thanks for reading and any help you might be able to give.

Let me begin by saying I've read the heisnburg thread and now use the tea (ancient forrest, Mycrow grow, mollases) consistantly and since Ive used it I have not seen any sign of "the slime" or its partner to soon follow "root rot". In the pictures you see the roots are simply brown. there is no slimy consistancy where the roots fall off via touch. My roots are fiborous and dont come off with a tug.
I am running four 5 light proof 5/gallon buckest, Jack's hydroponic water solubale nuts, two thousand watts. Filtered water. I do a water change every week on Sundays. I only add 1 cup or so of tea in that week. These plants are about a month old. The roots always start of white then they slowly turn this brown color? why? I know I am doing something wrong or missing a step? ph=5.7,5.8 always. ppm right now is 350 and I know that sounds low but I thought I was suppose to error on the side of caution. res temp is always 71 via 1/4 power water chiller.

let me also say that I have grown for several years via drip system with decent heavy harvest, but since switching to DWC I have not had a successfull harvest.
Thanks for any help guys and gals.
Happy New Year!!

Those look fine, if they look white it's usually new or they are using water with a little chlorine that bleaches them. Darker brown or slimy is what your are watching for.

How much tea are you using in your water? After your first dose of bennies, you should be fine with 15-20 ml of tea to a gallon after every change out. Are straining your tea of the debris with a sock? I ask this cuz I use the tea all the time and my roots don't get like that.

I used a micro that was black, it stained the roots.

Filtered or RO water? IMO, RO is best.

And, from what I've read 65F is the optimal temp for O2 absorption.

Good luck

yeah i barley use any tea. My whole system uses about 15 gallons of water (RO) and I only add maybe a cup or so. So its not the color of the tea thats making them brown.
I will lower temp and see if that makes a diffrence.

Not sure if this helps but I use Hydro Guard in my DWC and get nice white clean roots. It's Bacillus Amyloli-quefaciens which is from the Bacillus Subtilus family. They are bacteria that go after the food source of anaerobes and don't compete with the good bacteria. Keeps everything nice and white for me. I think it used to be called Aqua shield but now they made it stronger and it's called Hydro Guard. Hope that helps

hydro guard should fix you problem..

I dont use any tea ,molasses the only thing I can recommend house&garden aqua flakes A&B no cal mag just that

Looks like the pythium (bad bacteria) is beating out the good bacteria. You said

splifjoint said:

yeah i barley use any tea. My whole system uses about 15 gallons of water (RO) and I only add maybe a cup or so. So its not the color of the tea thats making them brown.
I will lower temp and see if that makes a diffrence.

Click to expand...

I lowered my water temps to 65 and added hydroguard. Working good now. Looks like the pythium (bad bacteria) is beating out the good bacteria. Looks like you need more bennies to beat out the pythium, although I'm no expert. I had an issue in my single bucket systems and could not beat the rot, so I added H2O2 for a couple days to sterilize everything, then added hydroguard back in after giving 48-72 hrs for the H2O2 to evaporate. Seemed to work really well.

7 days after transfer from cloner.

+1 for hydroguard.