festaedan
potamotrygon fan
No need...just drain and re-fill. I'd run a piece of Polyfilter to remove any residual ammonia or whatever that might remain...
A few months ago, one of my kids dropped an ant killer thing into one of my tanks. I did a big water change, added some Polyfilter to the filter and no losses.
Just test the tank with some hardy fish before you add more.
Did you also do water changes on your other tanks from the faucet / using the same process?
Matt
That was the only tank I cleaned yesterday. I was terrified that I might kill something else.