Set Up

Learn how to tell harmless rubbing from true flashing in aquarium fish, identify causes from water quality to parasites, and follow a step-by-step plan to protect your fish and biofilter.

Spot early illness signs in goldfish and act fast. This beginner guide covers normal behavior, common symptoms, water-quality steps, and simple prevention.

Learn why guppies die suddenly and how to prevent it with a practical, beginner-friendly guide—from cycling and water quality to acclimation, stocking, feeding, quarantine, and ongoing tank maintenance.

Stop fish jumps with a practical plan: secure lids, stable water and temperature, calm lighting, and smart stocking. A step-by-step guide to lasting tank safety.

Learn to tell if a bottom-sitting fish is resting or in danger, quickly diagnose water quality, and apply a clear, step-by-step triage and prevention plan for healthier tanks.

Identify, treat, and prevent white spot (ich) in freshwater aquariums with this practical guide. Learn early signs, the parasite’s life cycle, proven treatment paths (heat and salt, formalin/malachite green, copper), and quarantine and prevention steps to protect your fish and stop reinfection.

Not sure why your fish stopped eating? This beginner-friendly guide covers five common causes—water quality, stress, feeding, illness, and natural cycles—with quick, practical fixes for freshwater and marine tanks.

Learn the eight telltale signs of fish stress, diagnose the cause, and follow a proven recovery plan to stabilize water, reduce aggression, and restore aquarium health quickly.

Rainwater vs. tap water for aquariums: learn when to remineralize, test GH, KH, pH, and how to blend sources for stable, healthy fish and plants.

A practical guide to cutting nitrate in aquariums: test, water changes, feeding, filtration, and plant-based strategies to keep fish healthy and algae under control.