Phytoplankton

Keeping corals and other planktivorous invertebrates in the home aquarium is easier–and one’s chances of long-term success are better–than ever before. Indeed, aquarists are now breeding species thought to be nearly impossible to keep just a decade ago. So, what’s changed? It’s certainly not as though the animals have changed. What has changed is way we care for them. Among the biggest improvements we’ve made is the greater quality and availability of specialized feeds (such as live, planktonic microalgae) for these species. Maybe the best example of this is coraliculture. Coral foods in the early days of reef aquarium keeping were quite unimpressive. As in, made out of stuff like chicken eggs. The results were generally disappointing. We pretty threw the towel at coral foods altogether until fairly recently. And corals did alright without–certainly better than in the 1990s! But corals were still rather… blah. At least compared to what we see today. Of course, to a huge extent, the mindboggling variety and dazzling colors that aquarists now take for granted have come from decades of selective cultivation by extremely dedicated farmers. That said, much of this happy development owes to our better understanding of coral nutrition. Central to this are live phytoplankton products. There are now a handful of “phyto” aquarium foods on the market nowadays. These vary from one another in several key aspects. Cost, convenience and performance are major considerations by users; arguably, it is the last of these that is most important—at least to your aquarium inhabitants! In terms of quality, the best phytoplankton products are live (rather than dead and preserved), mixed-species products. Moreover, they are completely nutritionally balanced. Products containing intact, living cells are much cleaner than those made of dead stuff. Live products also produce less pollution. Live (and multiplying) phyto actually removes waste products from the aquarium water! Clearly, there is a lot about phytoplankton for the discerning reef aquarist to know! In this section you will learn what role phytoplankton play in reef environments, why they are so nutritious and how use phyto products most effectively to reduce nutrient levels and feed pods, corals, clams and other animals in the reef aquarium.