Water Quality

The oceans are unrivalled in their size and stability, and the corals we keep have evolved to that very, clean, pure, stable environment.

Bubble algae is a bottle green single-celled algae which forms jelly bean or round, marble-like shapes in the marine aquarium.

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.

Tropical fish come from a range of pH levels in nature but most are happy in a pH of 7. 7 is classed as a neutral pH and is neither acid nor alkaline.

Reefkeeping isn't always as easy as ABC. The perfect reef tank involves work, dedication, the right equipment, patience, and money!

KH is probably the most important water quality parameter after salinity and temperature. More important maybe, than Phosphate.

All tropical, coldwater and marine aquariums should be tested for Ammonia, Nitrite and Nitrate. We use these test kits to tell us if there are beneficial bacteria present.

The ultimate aim for any fish pond owner is to be able to view and enjoy their fish. Here’s the Swell UK guide to getting gin-clear pond water.

Corals are marine animals which need light, water and food but if you’ve got all that and they’re still dying, here’s what to look for and remedy.