Situation guide
Salt-grain spots spreading fast — treatment and tank-wide response.
The visible white grains are the parasite at its most protected, buried under the fish's own tissue, and only the free-swimming stage can be killed. This guide explains the three-stage life cycle and why the course must outlast the last spot, how to calculate the real water volume, why carbon must come out, which fish,
Fish have no external ears, so there is no ear infection to catch. The real early-detection target is a skin parasite outbreak. This guide shows how to tell ich from velvet, what rubbing means before spots appear, and why treatment must run its full course.
Ich, or white spot disease, is the most common fish parasite and looks like grains of salt scattered on the body and fins. Caught early it is very treatable. This guide covers how to recognise it, treat the whole tank correctly, and stop it coming back.
Spotting white spots, frayed fins, or bloating in your aquarium? Learn how to visually diagnose and successfully treat the four most common fish diseases, Ich, Fin Rot, Velvet, and Dropsy, with our step-by-step quarantine and treatment guide.
