Aquarium Lessons

Learn aquarium care, setup, and design — from beginner to advanced.

Aquascaping lesson library scene with planted aquarium, open books and study materials

Explore the main guides

Start with a hub. Each one organizes the best lessons for that topic.

Start here roadmap

A practical path through the early decisions that shape a healthy aquarium.

  1. 1 Choose your setup First Aquarium Checklist: Complete Beginner Setup Guide Beginner 14 min.
  2. 2 Understand cycling How Long Does Aquarium Cycling Take? Timeline, Tests & Ready Signs Beginner 12 min.
  3. 3 Pick beginner fish Beginner Community Fish: Peaceful Tank Guide Beginner 18 min.
  4. 4 Learn water changes Aquarium Water Change Schedule: How Often & How Much Water to Change Beginner 12 min.
  5. 5 Avoid common mistakes Beginner Aquarium Guide: Complete First Tank Roadmap Beginner 20 min.

What’s going wrong in your aquarium?

Find solutions to the most common aquarium problems.

Fish gasping at the surface Fish Gasping at the Surface White spots on fish Ich / White Spot Disease in Aquarium Fish Fish not eating Fish Not Eating: Causes, Safe Checks & When to Act Fish hiding or clamping fins Fish Stress Signs: Hiding, Clamped Fins, Colour Loss & More Cloudy water Cloudy Aquarium Water Ammonia spike Ammonia Spike in Aquarium Nitrite spike Nitrite Spike in Aquarium High nitrate High Nitrate in Aquarium Identify algae problems Aquarium Algae Library Aquarium plants melting Aquarium Plant Deficiency Guide CO2 problems CO2 Troubleshooting Guide pH too high Aquarium pH Too High pH too low Aquarium pH Too Low Filter flow or performance issues Aquarium Filter Flow Guide

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