General Info

Learn to spot early signs of illness in your aquarium fish, test water quality, quarantine and treat the sick, and follow practical steps to prevent disease and keep your tank thriving.

Worried your fish won’t eat? This beginner-friendly guide shows you how to diagnose feeding problems, fix water quality, adjust feeding routines and lighting, and know when to seek help with practical, step-by-step tips.

Upgrade your aquarium with confidence: a beginner-friendly guide to planning, budgeting, cycling, and safely moving fish to a bigger, healthier tank.

Discover how to choose the right aquarium substrate for your goals—whether planted tanks, community tanks, shrimp, or cichlids. This practical guide covers types, depth, prep, and maintenance to keep water healthy and fish thriving.

Practical, beginner-friendly guide to freshwater aquarium lighting: choose the right fixture, set spectrum and brightness, plan the photoperiod, and balance CO2 and nutrients for a healthy, vibrant tank.

Does adding fish to your aquarium raise disease risk? Learn where pathogens come from, why quarantine matters, and how careful acclimation and stocking can keep your tank healthy.

Discover how the Ocean Free Hydra filter uses Hydro-Pure oxidation to detoxify ammonia and organics, blending mechanical filtration with in‑chamber treatment. A beginner‑friendly guide to setup, maintenance, and myths.

Learn how UV sterilizers keep aquarium water clearer, reduce free-floating parasites, and ease maintenance. This guide covers what UV does and doesn’t do, sizing, installation, safety, and real-world setup tips for freshwater, planted, and reef tanks.

Learn how to safely use garden rocks and wood in freshwater aquariums: when it’s OK, how to test and clean, and which materials to trust and avoid.

Learn what cyanobacteria blooms are, how to recognize them, and a practical, step-by-step plan to safely remove them and prevent future outbreaks in freshwater and saltwater aquariums.