Aquarium Advice

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How to set up a coldwater fish tank

Many of us may have won a goldfish from the fair, or grew up with a goldfish in a bowl. But goldfish and other coldwater fish need a proper aquarium if they are to survive and thrive. Here’s how:Forget tiny bowls or even nano tanks. If you want to keep goldfish they need a medium to large aquarium from the start. Choose a long, rectangular aquarium which offers swimming space, a large surfa...

What are the most colourful tropical fish?

We are so lucky in fishkeeping that we have so much colour and variety in fish. There are 32,000 fish species that we know of and they have every colour and pattern imaginable, to make them stand out to a mate or help them blend into their surroundings.Us humans have created hundreds more colour strains of popular fish too like goldfish, guppies, Discus and angelfish so that now, no matter h...

How to get rid of algae in a fish tank naturally

Algae itself is a natural phenomenon. Wherever there is light and water there is algae, and algae has been on Earth for a billion years. So you could argue that having a certain amount of algae growing in your tank is natural. It can even be beneficial, utilising ammonia as a food source, itself being a food source for fish and invertebrates, and even producing vital oxygen via photosynthesis....

How to treat swimbladder disease

Goldfish

“Swimbladder,” is a common ailment in aquarium and pond fish, especially fancy goldfish. The swimbladder is an air-filled organ inside the fish that they use to regulate their position in the water. If the swimbladder stops working properly fish lose control of their buoyancy and may sit on the bottom, not able to swim up, or more commonly, float upside down at the surface. Upside do...

How much flow do I need in a reef tank?

It is said that although some corals survive without light, no corals can survive without flow. Water flow brings corals their food and washes away their waste. They also use currents to reproduce, releasing eggs and sperm into the water column which travel around before settling and finding a permanent home. So flow is one of the fundamentals of a healthy reef aquarium. A reef aquarium ...

How to get rid of brown algae in a reef tank

Brown algae can be a plague that ruins the look of a reef tank and can cause the owner to pull their hair out. It’s most common in reef tanks under six months old, and it is algae, kind of, but it can’t be solved the conventional way. If it was lush, green algae, the prescription would be to add an army of algae-eating livestock from hermit crabs to snails, seahares to foxface, algae ble...

What tropical fish are hardy?

long fined Zebra danios swimming

Hardy fish are often recommended to new fishkeepers as they are tolerant of small mistakes here and there and are easy to keep. To be classed as hardy, a tropical freshwater fish should be tolerant of temperature, pH, poor water quality and disease.No fish should knowingly be exposed to poor water quality as it compromises its welfare, but many first fish in new aquariums are unknowingly exp...

The best Christmas presents for fishkeepers

An aquarium set makes a great Christmas present

Christmas is coming and the fishkeeping sector can offer a wide choice of presents too. An aquarium is one of the best presents you can give to young people and those who love nature. A small aquarium set containing a light, heater, and filter comes boxed and will include the basics to get any new fishkeeper started. Give them a tank as a gift on Christmas day, they can set it up during the holid...

How to plant aquarium plants

Aquarium plants come in three main forms - potted, bunched and invitro - and all should be prepared differently before planting. Potted plants have rootstock, usually grown in a rock wool base, and inside a slatted plastic pot. First, remove the plant from its plastic shipping packaging, then slide the plastic pot off and lie the plant on its side. Tease away the rock wool until the whit...

What is the best external filter for aquariums?

new Eheim 5e external filter

External canister filters are the filter of choice for aquariums over three feet in length and combine mechanical, biological, and chemical filtration to clear water and break down waste. They’re termed “external” because the pump and canister sit outside the aquarium, usually in a cabinet underneath, and the filter is connected to the tank via an inlet hose and an outlet hose. Standar...

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