Hi Farmer!
This is exactly how everything started in my system, I had the same thought, ohhh maybe the ph was low, was the water, ohh maybe is leaking light, let's flush again, 3 days after, fuck, they're back! Flush again, and there is the nasty shit again, roots started to get a little brown and then...Root rot. I had to fight this damn thing for weeks, using H202 every single day and almost half strength, so desperate I was at the end, that I actually dip the roots into half strength of H202. I could see the fuckers being fried, roots were being burned at the same time but I didn't give a fuck, or was the plants dying cause by root rot or by the h202. The only thing able to save my plants were Roots Excelurator together with Great White, I highly recommend.
Here is picture before, and a week after.
Hope it help you
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