So we left one of our fish with my brother for 3 weeks,
When I picked him up, his tank was filled with brown algae and Cross (Our Betta) was laying on his side at the bottom of his tank. I had to go to work, so i instructed him to put Cross in a QT of clean water. When I returned a hour later, I found out, my brother didn't treat Cross's water...
What should I do???
I now have Cross in a Gallon Tank of Treated Tap water, with about a teaspoon of epsom salt.
He seems slightly more reactive than he did earlier, but I am still very worried.