Cultivating Ogo and Sea Lettuce for Your Tangs

These days, it seems that most marine aquarists are reef aquarists. And reef aquaria almost always house one or more tangs. This should seem reasonable enough, as representatives of this sizeable fish family (Acanthuridae) are found in abundance in pretty much every shallow water coral reef ecosystem on Earth. But their strong presence in the …

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Phytoplankton, Macroalgae, or BOTH?

As marine aquarists, we might think of algae as being divided into three (maybe four) distinct categories: the benthic (i.e. bottom-dwelling) microalgae, the open-water microalgae and the macroalgae. The first group consists of the film/turf-formers, the second group consists of the phytoplankton and the third group consists of the larger, plant-like seaweeds. The first group …

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Kickstarting Your New Refugium

Whether it’s just been installed as part of a bone-dry, newly set up aquarium system or as an add-on to a well-established, heavily stocked reef tank, you’ll probably want your new refugium to be operating at its peak performance from the onset. Seeding the right beneficial organisms in the right amount at the right time …

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Lighting the Refugium

There are plenty of reasons that you might consider installing a refugium in your marine aquarium system. Yours might be to add water volume to compensate for an increasingly crowded main tank. You might want to boost your copepod production. Most probably, you’re aiming to reduce dissolved nutrient concentrations. Particularly in the latter case, you’ll …

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Clean Sea Lettuce direct from our Algae Farm, perfect for your refugium!

Stocking a Refugium

Marine aquaria have a peculiar way of growing (in terms of both size and complexity) over time. These “add-ons,” be they filtration units, reactors, or whatever, grow from the so-called main tank in an almost organic manner. But, no matter how elaborate an aquarium set-up becomes, the sum of all the parts can always be …

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Feeding Your Marine Animals Live Macroalgae

Farmed in the ‘Fuge: Feeding Your Marine Animals Live Macroalgae Grazing might appear to be an easy and carefree way for an animal to get its meal. This is, however, not often so. For one, plants have comparatively less protein and fat content than meaty fares. Herbivores therefore must consume considerable amounts of food to …

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Ulva spp. Seaweeds: The Refugium Powerhouses

Virtually all marine aquaria have fish residing in them. And fish must be fed. Which is fine, because most hobbyists enjoy feeding their animals and do so quite generously. The result, however, is a whole lot of fish waste. These waste products are mineralized (that is, broken down) through biological processes into simple compounds such …

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An Overview of the Green Alga Chaetomorpha

The typical purpose of a refugium is to cultivate a thick bed of macroalgae. While some refugium plants like chaetomorpha provide important habitat for microcrustaceans (e.g. pods) and may even be considered to be ornamental, they are used primarily to take up excess nutrients (e.g. nitrate, phosphate) from the aquarium water. In practice, these nutrients …

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An Overview of the Red Alga Gracilaria

There are a lot of good reasons to incorporate a planted refugium with Gracilaria into one’s marine aquarium system. The usual stated purpose is for the removal of excess nutrients such as nitrate and phosphate that build up in the aquarium water. In theory, these nutrients actually exit the system when algal biomass is harvested …

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Clownfish hosting an Anemone

Aquariums: The New Medicine

You enter the waiting room of your doctor’s office and you know she’s not going to be happy about your blood pressure or weight gain. Your palms start to sweat as you try to think of excuses for your lack of exercise and bad eating habits. As your pulse quickens, you look over to the …

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Sustainable Aquariums

Sustainable Aquariums

What are Sustainable Aquariums? An aquarium is a cornerstone of many homes and apartments, but how often have you come home to find your fish floating belly up? Whether the kids forgot to feed them or neglected to change the water filter, the bottom line is it’s time to go out and get a few …

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