I was using the same bucket to add clean water that I used to carry the dirty water. i figured since it was not a closed sterile system it was not an issue. But I now have a new clean bucket I use for adding clean water. Do you think I was contaminating my tank with the other bucket? I wonder if that is why it never went away. When columnaris is successfully treated does the normal coloration return?I'd say follow the medications recommended treatment plan if using meds. There isn't any reason to dose for an extended period of time and may cause unwanted effects, besides expense.
You could have been promoting cross contamination.
Personally, the cost of the meds for fighting columnaris for me.
I have started a new med course again last night only this time with a new bucket.
Thank you for your comments.