The Number 1 Common Aquarium Problem What’s one of the biggest mistakes in home aquariums? Overfeeding—it happens more often than you’d think. Fish might rush to the surface like they’re starving, but don’t be fooled. Too much food means more waste, poor water quality, and bloated, unhealthy fish. Feed them just enough—two to three times a day, in portions they can finish in five minutes, and even skip a day here and there. Healthy fish aren’t shaped like footballs—your tank (and fish) will be b