Fish care guides

A hospital tank is a small, simple aquarium used only for treating sick fish. It makes antibacterial doses accurate, keeps the treatment away from your main tank's filter, plants, and invertebrates, … read more: How to Set Up a Hospital Tank for Fish Antibacterials

Red sores and open ulcers on a fish are almost always bacterial, and they can go from a pink spot to a deep crater in a few days. Fast, gram-negative bacteria are the usual culprits, which shapes whi … read more: Ulcers and Red Sores on Fish: Causes and Treatment

Fish that gasp, breathe fast, or hang at the surface have a gill problem, but most gill problems in aquariums aren't bacterial at first. Rule out water quality and parasites before you reach for an a … read more: Gill Disease in Aquarium Fish: Bacterial or Not?

Dropsy isn't a disease on its own. It's the name for a fish swelling with fluid, a sign that its kidneys or other organs are failing, often because of a bacterial infection. Early action gives the be … read more: Dropsy in Fish: What It Means and What to Do

Fin rot is a bacterial infection that eats away at fin tissue, usually after something has weakened the fish first. Caught early, clean water alone often stops it. Once the edges turn red or the rot … read more: Fin Rot in Aquarium Fish: Signs, Causes and Treatment

Fish antibacterials treat bacterial infections, and only bacterial infections. Picking the right one comes down to three questions: is the problem really bacterial, which group of bacteria is most li … read more: Fish Antibacterials Guide: Which One for Which Problem