Depending on your nutes I would go sterile from the beginning. I use salt fertilizers to avoid the bacteria problems altogether, I hope.
If you are using organic nutes or additives you will have to use hydroguard or some other beneficial bacteria.
I have no experience or understanding with the organic grows other than our lawn and pastures
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They just get rain, herbicide and horse poop.
On my warm dwc bucket I had to just use pool shock, it did save the plant though, my roots were a slimy mess.
I took everything outside and washed it all with the garden hose, roots and all, I combed through those with my fingers to clean them well.
The roots all came back in nice and white after that and no more slime. This was all during flower of course.