Oh for anyone that wants to know how I cured the root rot and Pythia.
I went the sterilization route.
I added 28ml (1ml/gallon) of Clorox bleach to the control tank around wk 3 to kill the initial phythia and root rot. Killed all of it within 24 hours.
And since then I’ve used 14ml (.5ml/gallon) once per week for preventative maintenance. Not a single issue since.
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