Yeah, i use hydroton in an ebb and flow. I don't really like it, i am soon switching to DWC (with the hydroton).

I've been watering 4 times a day, half hour at a time. i've suffered a lot of root rot or dried, dying roots, but perhaps i didn't water them enough. either way i am getting way better results with DWC and it's way easier than ebb and flow...so i'm not gonna try and fix it...i'm just giving up on ebb and flow...what a coward eh? haha.

good luck.
skeet.