Dangerdoll
Global Moderator
this accidently happened to me one foggy morning as I was feeding my old betta... I had accidently poured a packet of sugar in the tank instead of my coffee..... it was a bad morning but nothing really did happen. I changed 50% of the water and then 2 days later changed another 50%. The fish lived for another 2 years after that so I would say it was not such a panicking situation.