Anyone using chemical media on their reef system will almost certainly have delved into the wonderful world of fluidising reactors at some point. There’s something mesmerising about seeing your chosen media churning and swirling, happily doing its job. More importantly of course, fluidisation is also a great way to avoid ‘caking’ and to make sure you get the best efficiency out of your media (as opposed to ‘passive’ use, in a mesh bag for example). It’s more than likely that this research hasn’t left you with a clear ‘winner’ though, indeed uncertainties about reactor sizing, pumps, volume, construction, plumbing options and the like often result in something of a ‘hopeful’ purchase. In this review we aim to take some of the guess work out of this buying process by bringing you one of our ‘hands on’ reviews. Continue reading
A team from Heriot-Watt University has identified more than 100 different species ranging from strange single-celled organisms to coral species and even an octopus on the slopes of a huge and ancient undersea volcano. Amazingly though these life-forms aren’t thriving in warm sunlit tropical waters, rather they have been observed in dark, frigid waters 1000m below the sea surface on the Hebrides Terrace Seamount, off the coast of Scotland. Continue reading
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A set of experiments undertaken in Hawaii, Moorea and Okinawa, and now documented in the journal Proceedings of the Royal Society B, offer a glimmer of hope for the future of coral reefs under the continuing threat of Ocean Acidification. In the study, two coral taxa (Pocillopora damicornis and Porites) and two calcified algae (Porolithon onkodes and Halimeda macroloba) were subjected to conditions that mimic oceans if CO2 concentrations in the atmosphere reached 1000 ppm, more than double the levels today. Surprisingly, three out of the four could still easily form their hard calcium shells even in such an acid ocean. Although positive, the discovery doesn’t necessarily mean that ocean acidification won’t be bad for corals and algae though. It does mean that across the Pacific some of species may prove to be more resilient than others.
As LED aquarium lighting continues to evolve rapidly, let’s take a look at how this technology can benefit our reef tanks beyond the illumination of corals and fishes in our main display tank. As well as providing such lighting, LED units can also be extremely useful for fuelling algae filters in sumps, indeed we’ve shown this before with our review of the Arcadia EcoAqua 30watt spotlight. With many hobbyists now switching to LED for this purpose, in this review we look at another unit that can be adapted from its primary use as a freshwater planted tank light, and put to good use in a marine setting. Continue reading
Digital-Reefs sponsor and leading European importer Amblard S.A have just announced that their employee and renowned marine biologist Dr Vincent Chalias has been invited to participate at MACNA 2014 (Marine Aquarium Conference of North America) which will be taking place in Denver, Colorado from the 29th to the 31st of August 2014 .
At the conference Vincent will present Amblards ongoing and upcoming work, research and projects in the area of coral cultivation. He will also explain their contribution to the discovery of a new species of frog fish (Histiophryne pogonius) and present new Euphyllia species thus illustrating the quality of our Amblards work in the domain of reef aquatics.