Help!! Root Rot: dwc hydro

So Im new obviously and having issues. Ive dealt with root rot in the past and it inevitably won. At this point I feel kind of helpless and on the verge of giving up.
Here's what Ive done to keep root rot at bay:

-Changing water twice a week
-Clean dwc bucket with bleach
-air Hose and air stone all gets submerged in boiling water each water change
-Fresh water get spiked with hydrogen peroxide

This worked for the most part but I notice that the roots still had slight brown to them later on. I assumed this was from nutes but the day I ran out of hydrogen peroxide it was pretty apparent that it was actually root rot because it pretty much exploded.
At this point I cant keep it away and have given up on this plant.

What am doing wrong here? Any help would be much appreciated.

A beneficial tea is the only way forwards really once you have the rot, if you want to save this plant.

As for the cause it could be many things, but it sounds strange as you seem to have a good preventative schedule in place.

Could it be heat issues, do you live in a warm climate? What nutrients are you using, and what additives do you use?

You can try SOS Beneficial Bacteria by Strata. When I was running DWC that stuff worked wonders.

Most common problem in the hydro room is pathogens in the res. To stop this and avoid in future use H2O2 , 50% grade at 1000:1 EVERY 4 DAYS in the res.
35% grade at 750:1 every 4 days in the res, 90% grade at 1800:1
. Buy it in bulk and use long gloves and eyeware.

drain and flush the res every 2 weeks.

What is the temp of you water? If it goes much above 72 there will be issues, and that's where ice packs come into play. Me myself, I am not a big fan of H202. I like microbes, like CannaCole mentioned before. The H202 kills everything, even the good stuff you need for healthy roots. I hope you get it straightened out.

Thanks for the replies everyone. I honestly dont know my res temp, the room never gets above 70-75 and lately its been a bit cooler. I got some aquashield today but it may or may not be expired.

Transplant them into soil. It is a sure way to save them. I did it when this happened to me and it worked out very well for me. Works out for everyone. Doesn't really matter how bad your plants look. They will survive.

^^^ what he said... A good innoculation would be H & G roots excelurator ..pond zyme