Techniques for Maintaining Calcium and Alkalinity in Reef Tanks

Calcium and alkalinity are vitally important chemical parameters in reef aquariums. They are used by stony corals to build their calcium carbonate skeletons. A lack of calcium and alkalinity in the water will inhibit the growth of reef-building corals and invertebrates, which will eventually lead to health problems. What is calcium? Calcium is one of … [Read More]

Calcium: A Critical Element in Reef Aquariums

The stony corals, crustaceans, mollusks, and echinoderms in our marine aquariums depend on it to build their skeletons/shells/tests. Soft corals use it to build supportive structures, called sclerites, in their tissues. Of course, without it, you’ll never get a nice patina of coralline algae on your rockwork. The “it” I’m referring to is calcium, and … [Read More]

Marine Aquarium Antacid: Understanding Alkalinity

When I first made the switch from freshwater to marine fishkeeping, I was somewhat befuddled by the term “alkalinity” as it’s typically used on the saltwater side of the hobby. During all my years of keeping freshwater systems, I had always used the term “alkaline” interchangeably with “basic.” In other words, with respect to the … [Read More]

My Top 6 Simple Accessories Repurposed for Marine Aquariums

Visit your local fish store, and you’ll see shelf after shelf of equipment, implements, doodads, and thingamabobs specifically designed to make the maintenance of marine aquariums more manageable. But when you really think about it, a lot of the handy tools and materials we hobbyists use on a daily basis come not from the LFS, … [Read More]