Ich cross contamination question, help please!

[icliao]

Can ich cyst be “scooped” out of the water column? How firmly attached are they after they encrusted onto the substrate?

I was at the 10th day of quarantine a new fish with CP at 50mg/g. I may have made a careless mistake to share a container with the display tank which is currently running fallow. I used the container to Scoop some water from the quarantine tank for water change then use it on the display later that day. The container has been washed and scrubbed with freshwater only and left to dry for 10 hours. The fish has never show any sign of disease and I am wondering how big is my chance of introducing a ich cyst into the fallow tank? I know it is almost an impossible question to answer but base on educated guess what do you think is my chance of introducing a ich cyst (not theront) to the fishless display.

1. Highly likely 2. Moderate chance 3. Unlikely 4. Highly unlikely

 

[Humblefish]

It's highly unlikely that you scooped out an encysted tomont, unless the container was used near the bottom (or close to the glass) of the QT.

It is far more likely that you may have scooped out a free swimmer that wasn't 100% disabled yet by the Chloroquine. But even a healthy velvet dinospore (worst case scenario) can only survive 15 days without a fish host, so just be sure to go fallow for at least 15 more days.

 

[icliao]

What a relief! The mistake really made me pretty unset (about myself) earlier. The qt water was skimmed from the surface of the tank so unless the cyst is free flowing I should be ok. I am not worry about theronts since I am only half way through my 90 days fallow period. Still have at least 7 weeks to go.