@Jay Hemdal
1. How long and at what ppm bleach would be necessary to kill all parasites/eggs? 100 ppm? 24 hours? Less?
2. Would it be safe to have two qt tanks set up, add bleach directly to one tank after transfer of fish to other qt, let that sterilize with everything running for circulation, add prime to neutralize bleach, and then add fish into it at transfer time with some bottled bacteria? Or is it necessary to remove old water, bleach, rinse, etc. before adding fish back?
3. Would you recommend formalin bath and transfer to new qt every 5-7 days? Or something different like every 8 days like with prazipro?
Thank you.
IIRC, you need to go higher than 500ppm for 24 hours to kill Neobenedenia eggs.
Personally, I’d just go with hyposalinity. It always works for me and also controls ich.
Page 39 of this journal has arguably the best paper on Neobenedenia: