How often should I change my aquarium water?Most aquariums should be cleaned every 2 weeks on average. It is easier to combine cleaning and water changes by using a gravel siphon, as this also removes any dirt and waste from the bottom of the tank.
When can I add new fish to my tank?
If you are introducing new fish to a matured aquarium, then there shouldn’t be a problem. However, you should monitor the ammonia and nitrite level for the few days following introduction as a precaution. Also, you should quarantine any new fish for at least 4 days in a separate tank before adding to your main tank. This will help to prevent spreading any diseases.
It is advisable to run a new tank with water only for at least 1 to 2 weeks before adding fish, to allow the filter to build up some beneficial bacteria. It helps to add King British Filter Aid + during this period to help the filter to mature. Fish produce ammonia through respiration, and release it into the water through their urine and across the gills. In a matured aquarium, the filter can remove the ammonia quickly before it causes any problems. However, in a new, un-matured aquarium the ammonia will linger and may build up and cause problems. If fish are added straight away to a new tank, then the ammonia they produce can poison them and they may die. Also, once you do start adding fish, they should be added slowly and gradually, not all at once. Spread it out over of a period of weeks by adding two or three fish at a time, to allow the filter to adjust to the larger load of ammonia and nitrite.
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- Fish Care
- Water Treatments & Medicines
- Aquarium - Maintenance and Care
- Set Up & Maintenance
- Does my aquarium need gravel or substrate?
- How long should I leave my aquarium lights on for?
- What maintenance should I do on my aquarium?
- What is a biological filter?
- How do I calculate the volume of water in my aquarium / pond?
- When can I add new fish to my tank?
- Can I add tap water directly to my aquarium?
- Water Quality
- How often should I change the aquarium water?
- How often should I clean my aquarium?
- How can I eradicate algae from my aquarium?
- Why are nitrite levels slowly creeping up in my new tank set up?
- Why does my aquarium water have a pale yellow tinge to it?
- What causes cloudy water in my aquarium?
- What is Water Hardness?
- How can I test the water in my aquarium?
- Set Up & Maintenance
- Fishkeeping Myth Busting
My fish has become swollen in the belly region. What's wrong?
This could be caused by a number of things, such as a swim bladder problem, constipation, or an internal infection. ✔ Make sure that the water quality is pristine (test for ammonia and nitrite using King British 6 in 1 Water Test Strips), and the dissolved oxygen is high (by ensuring good aeration).✔ Stop feeding for a day or two, to allow the gut to return to normal✔ Adding a salt solution, such as King British Revitaliser Tonic, can help the fish to recover and...
Why are nitrite levels slowly creeping up in my new tank set up?
What you are experiencing is very common. Your aquarium is still not 'mature', which means the filtration system has yet to establish a level of beneficial bacteria that are capable of consuming the nitrite in your tank. There are no 'set in stone' rules on how long it will take your aquarium to mature as there are so many factors that affect it. You can help the process by doing the following ✔ Manually increasing the number of bacteria in the filter using a...
When can I add new fish to my tank?
Mature TankIf you are introducing new fish to a matured aquarium, then there shouldn’t be a problem. However, you should monitor the ammonia and nitrite level for the few days following introduction as a precaution. Also, you should quarantine any new fish for at least 4 days in a separate tank before adding to your main tank. This will help to prevent spreading any diseases.New TankIt is advisable to run a new tank with water only for at least 1 to 2 weeks before adding fish, to allow the...
What causes cloudy water in my aquarium?
Cloudiness is usually caused by a bacterial bloom, which are usually harmless. Cloudiness is common in new aquariums. If your water is cloudy, then you should:✔ Increase the aeration and make sure that the filter is working correctly. ✔ Siphon the gravel and change a small amount of the water (15-20%) regularly until it goes away. Remember to add a de-chlorinator to the tap water.✔ Test the water to make sure there is not an underlying problem. ✔...
How can I eradicate algae from my aquarium?
‘Algae’ is a general term used to describe many types of aquatic plant life. Algae is present in almost every body of water on earth – it is completely natural and not harmful (unless it becomes out of control). Many fish keepers do not like algae because it makes their tank look unsightly. There are different types of algae that require different treatments.There are a few basic rules to follow that help to keep algae growth to a minimum. ✔ Do not place your...
Can I add tap water directly to my aquarium?
Tap water contains chlorine and chloramines, which are added to our water supply to act as a disinfectant. They are very effective at keeping the water clean for human consumption, but unfortunately fish cannot tolerate chlorine or chloramines. You therefore need to add a de-chlorinator (try using King British De-Chlorinator) to the water before adding it to your aquarium. In all other aspects, tap water should be perfectly safe for fish. However, it is also good to know the hardness of your tap water.