Author name: Nic Hsu

The ultimate guide to African cichlid substrate: how to choose, install, and maintain sand that stabilizes pH, protects fish, and supports natural digging.

Discover why new fish die while tank residents thrive and follow a proven plan: cycle, quarantine, acclimate, slow stocking, and stable care to boost survival.

Learn to spot columnaris (cottonmouth disease) early and stop outbreaks fast with a practical, step-by-step plan: test water quality, isolate sick fish, use proven antibiotics, and prevent recurrence.

Healthy aquariums run on biology, not gadgets. Learn the nitrogen cycle, how beneficial bacteria keep water safe, and practical steps to build a reliable biofilter and keep ammonia and nitrite at zero.

Discover why goldfish turn black and whether it’s genetics or a water-quality issue, then follow a clear, step-by-step guide to diagnose, fix, and restore color.

Learn why ammonia spikes happen in new fish tanks, how to test accurately, what to do immediately to prevent harm, and how to build a strong biofilter for long-term aquarium stability.

Learn to identify anchor worm (Lernaea) in aquarium fish, stop its spread, and treat safely—covering early detection, manual removal, whole-tank medications, quarantine, and prevention.

Gill flukes are a common, stubborn aquarium parasite. This step-by-step guide shows how to spot early signs, rule out other issues, and follow a praziquantel–based, safe, effective treatment plan to protect your fish.

Spot normal rubbing vs flashing in aquarium fish, diagnose quickly, stabilize water, and treat safely in quarantine to keep your tank healthy.

Discover which pond fish to avoid in a backyard pond and why. A practical guide to size, temperature, behavior, legality, and wise stocking for a healthy, wildlife-friendly water feature.