Unfortunately, your water parameters are not a great indicator of fish parasites in your tank. Obviously, if you have really poor parameters fish will be at a higher risk of contracting disease (which is often latent, meaning, laying in wait for a stress event), but parameters alone are not a good way to diagnose this.If my parameters were all stable and “within range” (detailed in original post), does it make ich less probable?
At this point the likeliest culprit seemed like velvet from the inverts (or accidental water from the bag) added a week or so before the deaths.
@vetteguy53081 is one of the R2R Fish Medic crew members, I would defer to him here

Last edited:
