We've had a small divided freshwater tank for 6 days now, and the first few days, it was fine. Changed the water yesterday because it was cloudy and stinky. Today it was cloudy and stinky again, changed it, but there seems to be little particles in it right after changing. I dumped pretty much all the water and wiped out the nonsense on the sides. I also added some of that tap water filtration stuff.
Is this tank too small for both of them? Should I separate them? Or are they just extra messy fish?