Scientists from James Cook University, University of Sydney and Queensland University of Technology have just discovered a vast Halimeda reef hiding in plain sight. Halimeda is a green macroalgae composed of calcified leaf-like segments. As these segments die, they accumulate…
Ultra Reef Macroalgae and Media Reactors will be quick to service
Ultra Reef has an innovative new design for a media reactor with an optional conversion kit to transform into a macroalgae filter/reactor. The design and craftsmanship of Ultra Reef aquarium equipment is uniquely Italian and it shows in all of their…
Reefs In Decline
I have been lucky in my life to have had the opportunity to dive in some of the prettiest and most diverse underwater habitats on earth. Without exception, the nicest dive sites are far from civilization, which stands to reason.…
KoralSea live macroalgae, copepod products and more
KoralSea is an interesting marine aquaculture company from Ireland that supplies live foods like copepods and live macroalgae to feed your favorite marine critters. The company’s tagline is “aquarium life through science” and it shows when you scroll through their website.…
Salty Q&A: Is a Sump the Same as a Refugium?
Question What exactly is the difference between a “sump” and a “refugium” (assuming there is a difference)? These are terms I didn’t hear in my 30-plus years as a freshwater aquarist, but I’ve heard them numerous times since starting my…
Unique Corals unveils new Pax Bellum N12 nano chaeto reactor
The Pax Bellum Chaetomorpha reactor is one of the more interesting new products to hit the aquarium scene last year. To date most of the Chaeto-filters from Pax Bellum have been made for rather large tanks, but at ReefStock we spied…
A.R.I.D. chaetomorpha macroalgae scrubbers from Pax-Bellum
The marine aquarium hobby is always on the lookout for ever simpler and more effective ways to reduce nutrients in our tanks. The A.R.I.D. devices from Pax-Bellum are a new way to apply intensive macroalgae scrubbing to nutrient reduction, making…
SEA Aquarium has the most gigantic ball of spinning Chaetomorpha algae
It’s no secret that I am personally not a fan of the kitchen sink approach to creating a “refugium” with all the sands and cruddy algaes that usually build up there. I and we, are very much in favor of using…
The Many Possible Purposes of the Saltwater Refugium
“Refugium” is a hobby term that resists easy definition. This is probably so because, unlike most aquarium accoutrements—heaters, powerheads, protein skimmers, lights, etc.—there’s no single, readily identifiable purpose for a refugium. Ask 10 different hobbyists what a refugium is for,…
The Many Means of Nutrient Export in Marine Aquariums
Dissolved nutrients. Sounds like a good thing, right? After all, every organism needs nutrients in one form or another in order to grow and stay in good health. So why are marine aquarium hobbyists—particularly reefkeepers—seemingly so fixated on keeping the…
