Things Needed For An Aquarium – The Complete Checklist For A Thriving Tank

Setting up your first fish tank is one of the most exciting journeys you can embark on as a nature lover.

We all agree that there is something incredibly peaceful about watching a slice of the riverbed or a vibrant coral reef right in your living room.

I promise that by the end of this guide, you will have a crystal-clear understanding of the exact things needed for an aquarium to ensure your fish don’t just survive, but truly thrive.

We are going to preview everything from essential hardware and water chemistry tools to the subtle decor choices that make a huge difference in your pets’ health.

Don’t worry—this setup is perfect for beginners, and I’ll be right here to walk you through every step of the process!

Choosing Your Foundation: The Tank and Stand

The very first decision you’ll make is selecting the actual vessel that will house your new aquatic community.

While it’s tempting to buy a small “goldfish bowl,” experienced aquarists will tell you that larger tanks are actually easier to maintain.

A larger volume of water is more stable, meaning small mistakes in feeding or cleaning won’t cause immediate disasters for your fish.

Glass vs. Acrylic

Glass tanks are the industry standard because they are scratch-resistant and remain clear for decades.

Acrylic tanks are lighter and offer interesting curved shapes, but they scratch very easily, even during routine cleaning.

For a beginner, I almost always recommend a standard 20-gallon long glass aquarium as the perfect starting point.

The Importance of a Dedicated Stand

Water is surprisingly heavy, weighing approximately 8.34 pounds per gallon.

A 20-gallon tank will weigh over 200 pounds once you add substrate and rocks, so a flimsy bookshelf simply won’t cut it.

Invest in a proper aquarium stand that is designed to distribute that weight evenly across the edges of the tank to prevent leaks or cracks.

Essential things needed for an aquarium: The Life Support Systems

Once you have the glass box, you need the technology that mimics a natural ecosystem and keeps the water safe.

The list of things needed for an aquarium starts with the “Big Three”: filtration, heating, and lighting.

Without these, your aquarium is just a stagnant puddle, and your fish will quickly become stressed or ill.

Filtration: The Heart of the Tank

Your filter is responsible for removing debris and, more importantly, housing the beneficial bacteria that process fish waste.

I recommend a Hang-On-Back (HOB) filter for beginners because they are easy to clean and provide great oxygenation.

If you are planning to keep shrimp or very small fry, a sponge filter powered by an air pump is a safer, gentler alternative.

Heating and Temperature Stability

Most popular aquarium fish are tropical, meaning they require a consistent temperature between 75°F and 80°F.

Look for a submersible heater with an adjustable thermostat so you can fine-tune the environment.

Pro-tip: Always place your heater near the filter intake or outlet to ensure the warm water is circulated evenly throughout the tank.

Lighting for Growth and Visibility

If you aren’t growing live plants, a basic LED strip will suffice to show off your fish’s colors.

However, if you want a lush “aquascape,” you will need a full-spectrum LED light that provides the specific wavelengths plants need for photosynthesis.

Set your lights on a timer for 6–8 hours a day to prevent massive algae outbreaks that can ruin the look of your tank.

Substrate and Hardscape: Creating a Home

The bottom of your tank isn’t just for looks; it serves as a home for bacteria and a rooting medium for plants.

Choosing the right substrate is one of the most permanent decisions you’ll make, as changing it later is a massive chore.

Gravel vs. Sand

Smooth aquarium gravel is great for beginners because it allows detritus to fall between the cracks where the filter can reach it.

Sand is essential if you plan on keeping bottom-dwellers like Corydoras catfish, as rough gravel can damage their sensitive barbels (whiskers).

Avoid “artificially colored” neon gravels, as they can sometimes leach chemicals and often look unnatural as they age.

Rocks and Driftwood

Adding hardscape elements like Seiryu stone or Mopani driftwood provides hiding spots for your fish.

Hiding spots are crucial because a fish that feels secure is a fish that will show its best colors and natural behaviors.

Always boil your driftwood before adding it to the tank to remove excess tannins, which can turn your water a tea-like brown color.

Water Chemistry and Conditioning Tools

You can’t just use tap water straight from the faucet and expect your fish to be okay.

Tap water contains chlorine and chloramines which are lethal to fish and will kill your beneficial bacteria instantly.

Water Conditioner (Dechlorinator)

A high-quality water conditioner is one of the non-negotiable things needed for an aquarium setup.

It neutralizes toxins in seconds, making the water safe for your pets during initial setup and weekly water changes.

I personally trust products like Seachem Prime because they also detoxify ammonia and nitrites in emergencies.

The Nitrogen Cycle and Test Kits

Before you buy a single fish, you must “cycle” your tank, which is the process of growing a bacterial colony.

To monitor this, you need a liquid water testing kit (like the API Freshwater Master Test Kit).

Avoid paper test strips if possible, as they are notoriously inaccurate and can give you a false sense of security.

You are looking for 0ppm Ammonia, 0ppm Nitrite, and a low reading of Nitrate before it is safe to add livestock.

Maintenance Tools for Long-Term Success

The “honeymoon phase” of a new tank is great, but you need the right tools to keep it looking pristine.

Routine maintenance is the secret sauce of every successful aquarist I know.

The Gravel Vacuum (Siphon)

A siphon is a simple tube used to vacuum fish waste out of the substrate while performing water changes.

I recommend doing a 20-25% water change every week to keep nitrate levels in check and replenish minerals.

It’s a therapeutic process once you get the hang of it, and your fish will often perk up immediately afterward!

Algae Scrapers and Nets

You will eventually face algae—it is a natural part of any healthy ecosystem.

A magnetic algae scraper allows you to clean the glass without getting your hands wet.

Also, ensure you have two different sized nets; catching a fast fish with one net is nearly impossible, but using two makes it a breeze.

Selecting Your Livestock and Plants

Now for the best part: choosing the living jewels that will inhabit your new world!

It is vital to research the specific needs of each species before bringing them home from the local fish store.

Beginner-Friendly Fish

For your first tank, look for “hardy” species that can tolerate minor fluctuations in water quality.

Zebra Danios, Cherry Barbs, and Fancy Guppies are excellent choices that are active and colorful.

Avoid “tank busters” like Common Goldfish or Oscar cichlids, which grow far too large for a standard starter aquarium.

The Benefits of Live Plants

I always encourage new hobbyists to try live aquatic plants like Anubias, Java Fern, or Amazon Swords.

Plants act as a natural filter by absorbing nitrates and providing oxygen to the water.

They also make the environment feel much more “real” for the fish, reducing stress and encouraging breeding behavior.

Safety and Electrical Considerations

Mixing water and electricity requires a bit of common sense and the right safety gear.

Never overlook the “boring” parts of the setup, as they protect both you and your home.

Drip Loops

A drip loop is a simple U-shaped hang in your power cords before they plug into the wall.

This ensures that if water ever leaks or splashes onto the cord, it drips off the bottom of the loop rather than running into the outlet.

It is a life-saving technique that every single aquarist must use for every piece of equipment.

Power Strips and Surge Protectors

With a heater, filter, and light all running 24/7, you will need a dedicated power strip.

Ensure it has a built-in surge protector to save your expensive LED lights and heaters from power spikes.

Keep the power strip mounted higher than the tank or inside the stand cabinet to keep it dry.

FAQ: Common Questions About Starting an Aquarium

How much does it cost to get all the things needed for an aquarium?

For a basic 20-gallon setup, expect to spend between $150 and $300.

This includes the tank, stand, filter, heater, light, substrate, and initial water conditioners.

You can often save money by looking for “kit” deals at major pet stores, though individual components are usually higher quality.

How long should I wait before adding fish?

Ideally, you should wait 2 to 4 weeks for the nitrogen cycle to complete.

Adding fish too early often leads to “New Tank Syndrome,” where ammonia spikes kill the fish within days.

Be patient; the most successful aquariums are the ones that are started slowly and methodically.

Do I really need a heater if my house is warm?

Yes, absolutely.

While your house might be 72°F, water temperature can fluctuate wildly between day and night.

A heater ensures a stable environment, which is vital because temperature swings weaken a fish’s immune system.

How often should I clean the filter?

You should gently rinse your filter media in old tank water (never tap water!) about once a month.

Rinsing in tap water will kill the beneficial bacteria due to the chlorine.

Only replace the filter pads if they are literally falling apart, as they hold the “good” bacteria your tank needs.

Conclusion: Your Journey Begins Here

Building a thriving underwater world is one of the most rewarding hobbies you can choose.

By gathering all the things needed for an aquarium before you start, you are setting yourself up for a stress-free experience.

Remember, the key to a beautiful tank isn’t expensive gadgets—it’s consistency and observation.

Take the time to watch your fish every day, stay on top of your weekly water changes, and don’t be afraid to ask questions.

Welcome to the wonderful world of fish keeping—your new aquatic friends are going to love their new home!