coralbandit
Aquarium Advice Addict
Columnaris is documented to last up to 30 days without host at least if not longer.
If you don't have live plants you could sterilize without shutting tank down.
Just bleach it and let the bleach evaporate over the waiting period.
If you don't have live plants you could sterilize without shutting tank down.
Just bleach it and let the bleach evaporate over the waiting period.