The Complete Beginner's Guide to Fishkeeping

Introduction

Welcome to the wonderful world of fishkeeping! This hobby offers a unique blend of natural beauty, scientific learning, and peaceful enjoyment. Whether you're setting up your first aquarium or looking to improve your understanding of aquatic environments, this guide will help you establish a healthy, thriving underwater world.

Getting Started: The Nitrogen Cycle

Before purchasing any fish, it's essential to understand the nitrogen cycle—the biological process that makes aquarium keeping possible.

Understanding the Nitrogen Cycle

  1. What it is: When fish waste and uneaten food break down, they release ammonia (NH₃), which is highly toxic to fish.

  2. Beneficial bacteria: Two types of bacteria develop in your aquarium:

    • Nitrosomonas: Converts ammonia to nitrite (also toxic)

    • Nitrobacter: Converts nitrite to nitrate (less toxic)

  3. Cycling timeline: Establishing these bacteria colonies takes 4-6 weeks in a new tank.

How to Cycle Your Tank

  1. Fishless cycling (recommended):

    • Set up your tank with filter, heater, and decorations

    • Add a source of ammonia (fish food, pure ammonia, or established filter media)

    • Test water regularly with a liquid test kit

    • Wait until ammonia spikes, then drops to zero

    • Wait for nitrites to spike, then drop to zero

    • When ammonia and nitrites read zero and nitrates are present, your tank is cycled

  2. Signs of a cycled tank:

    • Ammonia: 0 ppm

    • Nitrite: 0 ppm

    • Nitrate: Less than 20 ppm

Essential Equipment

The Tank

  • Size matters: Larger tanks (20+ gallons) are actually easier for beginners as they are more stable

  • Location: Place on a sturdy, level surface away from direct sunlight and heat sources

  • Materials: Glass is heavier but more scratch-resistant, acrylic is lighter but scratches easily

Filtration

  • Types of filtration:

    • Mechanical: Removes particles and debris

    • Biological: Houses beneficial bacteria

    • Chemical: Removes impurities and discoloration

  • Filter sizes: Choose a filter rated for at least your tank size, or larger

Heating and Lighting

  • Heaters: Use 3-5 watts per gallon as a general rule

  • Thermometer: Essential for monitoring temperature

  • Lighting: Consider both fish and plant needs, use a timer for consistency

Other Essential Equipment

  • Water conditioner: Removes chlorine and chloramine from tap water

  • Test kit: Liquid test kits are more accurate than strips

  • Siphon/gravel vacuum: For water changes and substrate cleaning

  • Algae scraper: For removing algae from glass/acrylic

  • Fish net: For safely catching and moving fish

When purchasing equipment its always recommended to buy and get advice from your local fish store

The following stores have an excellent selection of equipment:

Amazonia Aquatics

Fin Gallery

Pisces Pet Emporium

Setting Up Your First Tank

Step-by-Step Setup

  1. Rinse all materials (except filter media) with water only—no soap

  2. Place the tank on a sturdy, level surface

  3. Add substrate (1-2 inches for fish-only, 2-3 inches for planted tanks)

  4. Install equipment (filter, heater, thermometer)

  5. Add decorations (rocks, driftwood, plants)

  6. Fill with water using a plate to prevent substrate disruption

  7. Add water conditioner

  8. Turn on equipment and ensure everything works

  9. Begin cycling as described above

Decorating Your Tank

  • Natural vs. artificial: Both have pros and cons

  • Creating hiding spaces: Essential for fish security

  • Plant considerations: Live plants improve water quality but require more care

  • Aquascaping basics: Consider focal points, height variation, and open swimming area

Resources:

Choosing Your First Fish

Beginner-Friendly Fish

  • Peaceful community fish:

    • Tetras (Neon, Black Skirt, Ember)

    • Rasboras (Harlequin, Chili)

    • Danios (Zebra, Celestial Pearl)

    • Corydoras catfish

    • Platies and Swordtails

    • Guppies and Endlers

    • Honey or Dwarf Gouramis

    • Bettas (in appropriate tanks)

Stocking Guidelines

  • The one-inch rule: One inch of adult fish per gallon (very general guideline)

  • Better approach: Research each species' needs and compatibility

  • Stocking slowly: Add fish gradually over weeks, not all at once

  • Quarantine: Consider quarantining new fish before adding to main tank

Fish Compatibility

  • Research temperament: Peaceful, semi-aggressive, aggressive

  • Swimming levels: Top, middle, bottom

  • Water parameter needs: Temperature, pH, hardness

  • Schooling requirements: Many small fish need groups of 6+

When purchasing fish its always recommended to buy and get advice from your local fish store.

Websites like AQAdvisor can be useful with stocking your tank.

Routine Maintenance

Water Changes

  • Frequency: 25-30% every 1-2 weeks for established tanks

  • Procedure:

    1. Turn off heater and filter

    2. Use siphon to remove water while cleaning gravel

    3. Add conditioned water of similar temperature

    4. Turn equipment back on

Feeding

  • Amount: Feed only what can be consumed in 2-3 minutes

  • Frequency: Once or twice daily for most fish

  • Variety: Offer a mix of high-quality flakes, pellets, frozen, and live foods

  • Fasting: Consider a fast day once a week

Testing and Monitoring

  • Weekly tests: Ammonia, nitrite, nitrate, pH

  • Monthly tests: GH (general hardness), KH (carbonate hardness)

  • Observation: Watch for changes in fish behavior, appearance, or eating habits