I'll trust your eyes, Chad, I can't tell in that lighting, but if they are, you are getting root rot. Hydroguard is my go to, I love the stuff, but it won't correct root rot, it's better as a preventative, i would spray hydrogen peroxide, full strength 3% stuff from the drug store on those roots daily; BUT, i believe i see your biggest problem. I don't think your roots are getting enough oxygen. What I've learned about hydro, you need lots of air for oxygen at your rhizosphere.but they looked a little brown and slimy
I will try thatWhats the temperature of your reservoir solution. If its too warm thats exactly what happens. Any temp in your res over 70 is not ideal for roots. I use to have to keep frozen water bottles in my res to keep it cool enough for healthy white roots when i lived in Florida.