Had a drama , one of them died , no idea why , roots ok , just shrivelled up and that was it ... tried had watering , puyt her in her own tent and bubbler... nothing.... maybe the thrips got it before I could use the parasitic mites 🤔
Hey bro ! I don’t really know anything about Hydro , but the roots looks like they have a kind of jelly like slim on it ? I personally think you were having no issues when you were using Canna ...