Freshwater Fish Diseases,Algae Issues,Emergencies
My wife has had an aquarium for about a year and a half. Nothing fancy 20 gal. tank with a couple of Swordtails, 3 or 4 Danios, and two snails. The other night she decided to clean the tank and do a full water change. She had been wanting to change the look of the tank (we have had some pretty...