Thanks to my friend Danilo Ronchi I refreshed a little 'memory on the power needs of the corals in the aquarium. He has written a nice article, full of her pictures, blog DaniReef , dedicated all'acquariofilia "salt".

Now have a couple of years I have abandoned the ' marine aquarium , but I try to keep me updated from time to time.
I keep such a pleasure to read especially in the field of nutrition of fish and invertebrates, their reproduction in the aquarium on live food and crops of phytoplankton and zooplankton .

Article I hit a phrase, and I quote: "These experiments were conducted by Dr. Ronald Shimek marine zoologist in 1997 showed that to maintain in an aquarium populated with corals on average 300-liter levels of power as a naturally occurring plankton should provide about 270 grams of wet feed per day, a value that would send all of our system in crisis. From this follows directly that our corals are strongly undernourished from the point of view heterotrophic. "

And if you have never seen a marine aquarium at night ... with a little torcetta, then you know how greedy and ruthless corals with their polyps everted, sometimes for tens of cm, capable of catching anything that passes near them.