My roots turn a bit brown during flower because of the nutrients. Once a week I fill with PH water. Helps use up the stored nutrients in the roots. As long as your foliage looks good I wouldn't worry too much. Hope it helps!
You can always spray the roots with some diluted hydrogen peroxide and see if it foams up. Foaming indicates root rot.
To me it just looks like stained roots. I use GH 3-part nutrients and it stains my roots.
Do you use beneficial microbes or you going sterile?
Peroxide spray will kill your bennies, but you can obviously lift the plant out of your reservoir, spray with h2o2 for the test, then spray with your current reservoir solution to dilute out all the h2o2 so your bennies are not killed off (at least not as many). Then after 24 hours or so give it a small dose of bennies to help repopulate.
Otherwise, if you are going sterile, you can just add some h2o2 directly into your reservoir solution. As your system oxygenates the water, it helps break down the h2o2, so you need to add a bit every so often on a sterile system.
Edit: You will also be able to smell root rot. Normal reservoir should have very little smell, or even a slight mildewy smell (like damp clothing). Stronger smells would indicate root rot. Rotten egg (sulfur) smell is definitely root rot.
You can always spray the roots with some diluted hydrogen peroxide and see if it foams up. Foaming indicates root rot.
To me it just looks like stained roots. I use GH 3-part nutrients and it stains my roots.
Do you use beneficial microbes or you going sterile?
Peroxide spray will kill your bennies, but you can obviously lift the plant out of your reservoir, spray with h2o2 for the test, then spray with your current reservoir solution to dilute out all the h2o2 so your bennies are not killed off (at least not as many). Then after 24 hours or so give it a small dose of bennies to help repopulate.
Otherwise, if you are going sterile, you can just add some h2o2 directly into your reservoir solution. As your system oxygenates the water, it helps break down the h2o2, so you need to add a bit every so often on a sterile system.
Edit: You will also be able to smell root rot. Normal reservoir should have very little smell, or even a slight mildewy smell (like damp clothing). Stronger smells would indicate root rot. Rotten egg (sulfur) smell is definitely root rot.
Ya, if it's rot you should be able to smell it. I have 10min till lights on an I get some of my root pictures up fer ya. @THCosmic good call on the smell, I've never had it personally, I did meet a grower late 90's that definitely had it. Yer right it will smell.
I have bought h202 which I will use to clean in-between runs and as a test as suggested. I've also bought some TNC MycorrHydro which I am going to start using from tomorrow.
I have bought h202 which I will use to clean in-between runs and as a test as suggested. I've also bought some TNC MycorrHydro which I am going to start using from tomorrow.
Ok so my two tents, trees and discoloration in roots. An they are happy I have some tip burn, but ph was off a bit.
You share pics of the other side of the plant?
If they are happy upstairs, you should be good in the root zone. Play Miles Davis fer yer plants. You will thank me later. Cheers Bro! Welcome to the farm!.