The most beautiful reef fish for your marine aquarium
From the psychedelic mandarinfish to the royal gramma and the firefish: these reef fish are among the most beautiful, and here is what you need to know before buying them.
Marine & reef
From your first reef aquarium to corals and reef fish: everything about marine aquariums.
The most beautiful corals for your reef aquarium, from beginner to expert
Soft corals, zoanthids, mushrooms, LPS and SPS: which corals are the most beautiful, which are easy, and what should you consider when placing them?
Setting up your first reef aquarium in 8 steps
A reef aquarium looks complicated, but with patience and the right order it is very doable. This step-by-step plan takes you from empty tank to first clownfish.
Breeders of marine fish and corals in Europe
More and more marine fish and corals come from breeding instead of the reef. An overview of European breeders and coral farms, and why tank-bred is the best choice.
Combining reef fish: which fish go together?
Reef safe or not, peaceful or territorial, and in what order do you add them? How to put together a fish population that lives calmly alongside your corals and invertebrates.
The best equipment for a reef aquarium
Protein skimmer, flow, lighting, sump and auto top-off: the equipment that keeps a reef aquarium stable, with a handy checklist.
Water parameters in a reef aquarium: what to test and why
Salinity, KH, calcium, magnesium, nitrate and phosphate: which parameters matter for corals, how often to test them and how to keep them stable?
Palette surgeonfish: stunning, but not for every tank
Since Finding Nemo, everyone wants a ‘Dory’. But the palette surgeonfish grows large and needs lots of swimming space. Read this before you buy one.
Macroalgae and a refugium: the ‘plants’ of the reef aquarium
There are no true aquatic plants in a reef aquarium, but macroalgae do the same job: they absorb nitrate and phosphate. Which macroalgae are suitable and how do you set up a refugium?
The most common diseases in marine fish and how to treat them
White spot, velvet, clownfish disease, flukes and HLLE: an overview of the most common diseases in marine fish, and why quarantine is the most important medicine.
Marine ich and velvet in marine fish
Cryptocaryon and Amyloodinium are the most feared parasites in saltwater. How to recognise them, how their life cycle works, and how to tackle them without harming your corals.
Coral pests and problems: Aiptasia, flatworms and bleaching
Glass anemones spreading everywhere, flatworms, coral eaters and bleaching corals: how to recognise the most common coral problems and tackle them.