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No matter how hard we try, we all make mistakes when it comes to keeping an aquarium. Some mistakes are more common than others, and they can cause significant problems for your fish. In this article, we’ll go over 18 things every fish keeper should avoid.
1. Over Cleaning the Tank
Beneficial bacteria naturally grow on submerged surfaces in your aquarium, including filter media, substrate, decorations, tank walls, and pumps. These bacteria are essential for keeping the water healthy by breaking down fish waste, dead plants, and other organic debris. Some people believe cleaning and disinfecting everything in the tank is beneficial, but this can be harmful. Without these bacteria, your fish could suffer from ammonia and nitrate poisoning.
It’s best to clean your tank in stages. First, clean the filter, then wait a few weeks before cleaning decorations. Allow time for the tank to recover between cleanings.
2. Not Washing Your Hands Properly
Before placing your hands in the tank, it’s important to wash them thoroughly. If you have soap residue, lotion, or other chemicals on your hands, they can harm your fish. Over time, even repeated hand exposure can create health problems for your aquatic friends.
3. Using a Small Tank
A cramped or boring tank can make fish irritable and even aggressive, sometimes leading to attacks on other fish. Studies show that tanks with plants, rocks, and hiding places result in less aggressive fish. Avoid small, bare tanks and give your fish the spacious, interesting environment they deserve.
4. Lack of Research on Fish Needs and Compatibility
Many people buy fish without considering their specific needs. It’s crucial to research factors like tank size, pH level, temperature preferences, and whether the fish need to be in groups or have specific social behaviors. Always research before adding new fish to your community tank to ensure compatibility.
5. Tapping on the Glass
Tapping on the glass can cause your fish unnecessary stress. Fish are disoriented by tapping, and unlike pets like dogs or cats, they won’t respond or come to you when you call or tap the tank.
6. Overfeeding Your Fish
Overfeeding is a leading cause of ammonia and nitrate poisoning in aquariums. Unlike mammals, fish will continue to eat even if they’re full. Overfeeding can also lead to water quality issues. Fish should only be fed as much as they can consume in 2-3 minutes. If leftover food accumulates, reduce the amount you feed.
7. Using Harsh Chemicals When Cleaning
Using chemicals like dish soap or cleaning detergents on your aquarium’s decorations, glass, or filter can be harmful to your fish. Instead, wipe down surfaces with a sponge soaked in aquarium water to avoid introducing toxic substances.
8. Thinking All Decorations Are Safe
Some decorations can be dangerous for your fish. Avoid using sharp objects, concrete, copper coins, or untreated wood, as they can introduce toxins or bacteria into the tank. Ensure that any decorations you add are safe for your aquatic pets by doing proper research.
9. Performing 100% Water Changes
Changing all of the water in your aquarium can cause pH shock, which is dangerous for your fish. If you must do a water change, avoid more than a 50% change within 24 hours unless it’s an emergency. Gradual water changes help maintain stable conditions.
10. Not Providing Hiding Places
Hiding is a natural behavior for fish, and without enough hiding spots in the tank, they may feel stressed. Provide plants, rocks, or decorations to help your fish feel secure and comfortable in their environment.
11. Using Cleaning Sprays Near the Tank
Cleaning products or pesticides can be toxic to fish, even with just a little overspray. Always be careful when using any sprays around the tank, and cover your aquarium and filter completely if necessary.
12. Releasing Fish Into the Wild
Releasing exotic fish into local waters can cause significant harm to both the fish and the local ecosystem. These fish may struggle to survive in the wild due to unsuitable water conditions and could spread diseases or outcompete native species. In many places, releasing aquarium fish into the wild is illegal.
13. Using Tap Water Without Treating It
Tap water often contains chlorine or chloramine, which are harmful to fish. Chlorine can be removed by letting the water sit for 24 hours, but chloramine is more stable and needs to be treated with a commercial dechlorinator or water conditioner. Always use a water conditioner to neutralize chlorine and chloramine before adding water to your tank.
14. Overstocking the Tank
While it’s tempting to add many fish to a new tank, overstocking can lead to a variety of problems. Overcrowded tanks can cause issues with water quality and create stress for the fish. Be mindful of how many fish your tank can accommodate based on its size and the species’ needs.
15. Using the Aquarium as a Nightlight
Fish need both daytime and nighttime. They sleep just like any other animal, and the darkness signals when it’s time for rest. Avoid leaving the aquarium lights on at all times—turn them off at night to provide your fish with a healthy day-night cycle.
16. Emptying the Tank Over the Sink
Never empty your aquarium over the sink, as fish can jump out and potentially get washed away down the drain. Always remove the fish carefully and avoid risking accidents.
17. Letting Children Play Around the Tank
Children’s rough play around the aquarium can lead to accidental damage or cause fish to panic. Sudden movements can startle the fish, causing them to swim into objects or become stressed. While it’s okay for children to enjoy the aquarium, ensure they play safely and gently near the tank.
18. Ignoring Water Quality
Regular water changes are essential for maintaining the health of your fish. Even the best filter can’t prevent the buildup of waste and harmful byproducts. Regular partial water changes help maintain a clean and healthy environment for your fish.
By avoiding these 18 mistakes, you’ll ensure a healthier and happier aquarium for your fish. Proper care, research, and routine maintenance will go a long way in creating a thriving aquatic environment.