Marine

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What do I need to set up a marine aquarium?

Marine fish tanks are so cool, and there’s no better hobby to start while you’re locked down at home. Here’s what you’ll need:TankChoose a model from 50-500 litres to get you started, but note that you’ll need a tank of 300 litres and 120cm in length minimum to keep Tangs long term.LightIf you want live corals and anemones you need good light. Choose high-powered control...

How to set up a protein skimmer

How to set up a protein skimmer

There are lots of protein skimmers available for marine tanks, and they have many benefits including increasing oxygen levels and reducing nutrients. But which one is right for your tank, and how do you set one up?There are several types of protein skimmer: Internal, hang-on, and sump based, with sump based skimmers sub-dividing again into internal (which sit inside the sump,) and external, w...

How much light for a reef tank?

Swell UK Marine Coral Advice

Coral reefs occur naturally in some of the sunniest places on earth, but light is changed when it travels through seawater. Sunlight can be regarded as full spectrum, but as soon as it hits the water some of that spectrum is filtered out. First to go is the red spectrum, followed by orange, yellow and green. Violet is also filtered out eventually, but blue light penetrates deep and is the last li...

How much water should I change in a reef tank?

The oceans are unrivalled in their size and stability, and the corals we keep have evolved to that very, clean, pure, stable environment. In a closed aquarium we may start off with good saltwater but it quickly depletes and degrades its chemical values. Pollutants build up too, so we need to change the water.Water changes are vital to the success of most reef aquariums. They dilute nitrates a...

How to raise pH in a reef tank

Swell UK Marine Coral Advice

For the new reefkeeper, pH shouldn’t be made a priority. Once corals are added it is KH which has greater immediate importance because it drops quickly, and drops to a level which is detrimental to coral health. But get into your stride with the management of KH, Calcium, Magnesium, nitrate, phosphate and other supplements and pH can definitely come back into play. The pH of the ocean ...

Reef safe fish for the marine aquarium

Swell UK Blog Fish Tank

A pristine reef full of fish and corals looks idyllic, but alas many (very desirable,) fish species are there to eat corals or other fish and will do the same in the home aquarium. Here are some of the best reef safe fish.ChromisGreen Chromis aren’t everyone’s idea of an exotic looking tropical marine fish, but add a shoal to a large reef tank and collectively they make for a wonderfu...

The five biggest issues in reefkeeping – solved

Selection of tropical fish

Reefkeeping isn't always as easy as ABC. The perfect reef tank involves work, dedication, the right equipment, patience, and money! Every tank has issues, but they can all be overcome with the right advice from the start.AlgaeAlgae affects all ponds and aquariums but that hard, alkaline water, bright surfaces and really bright lighting mean that it affects reef tanks the most. The first ...

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 eats flatworms in a reef tank?

Flatworms can be a pest in reef aquaria and if left alone they can multiply and reach plague proportions. Here’s how to control them.FishMany wrasses eat flatworms and of them, the sixline or pyjama wrasse is one the best. Its stays small is reef safe, cheap, and widely available. It doesn’t often jump out like many wrasses can and can be housed in smaller reefer tanks too. It’s als...

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