Videos of brine shrimp nauplii captured and eaten by a Galaxea fascicularis polyps.
The small crustacean is paralyzed by the nematocysts and then digested by the eversion of the mesenteric filaments.
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Meanwhile, remember that "phytoplankton is the set of photosynthetic autotrophs present in the plankton, or those organisms able to synthesize organic matter from inorganic substances dissolved, using sunlight as an energy source."
The Phytoplankton live at times is also sold in shops specializing in marine, and also online, at a price that I have never found below 12 € per liter, and a mean dose provides about 20-30 ml per 100 liters of ' water.
Well worth doing a calculation on the convenience, assuming giving it at least 2 times a week, and considering that I may live in the refrigerator longer than 3-4 weeks (if you know more than me ... comments below are for!) .
Linko also my previous article on the construction of a reactor of phytoplankton or its purchase (there are now quite easily in a variety of accessories for aquarium shops) to just start a culture of microalgae in suspension.
In the past I have personally tried to keep alive a culture of Chlorella, perhaps the easiest, which is held in fresh water. It paid off for a few months, then the culture has collapsed, probably I've lazily and slowly lowered his guard by slowing the cure for this farm home.
This time I'd try riprodurr and Nannochloropsis salina, or the sound, who lives in salt water and is among the smallest, in fact the dimensions of this alga vary from 2 to 6 microns, and then to the coral is a good food, as well as for zooplankton who lives in the aquarium and should reproduce faster sommonistrando this alga.
The temperature should be above 16 °, but that's the least, best to stay between 20 and 24 ° Celsius.

Food concentrates for microalgae (ie, fertilizers), where to buy them??
Macronutrients primarily be present, the nitrate (NO), the phosphate (PO, 15 but in relation to 1) and iron (Fe), along with micronutrients such as zinc (Zn), cobalt (Co), manganese (Mn ) etc.., and finally the vitamins .
A product that seems to me you call me Microalgae Grow - Aquaculture Supply, marketed by Scubla seems to me (or rather WAS distributed by them, seems not to market it more ... I could not find it in Italy Dovre, then)
Some use the normal garden fertilizer for green plants, measured 1.5 ml per liter of culture, but ONLY if they are used to feed rotifers or other zooplankton, phyto otherwise administered directly in the ' marine aquarium should use less fertilizer rich in "unidentified stuff", then a few chemical elements and only those.

Micro-algae will follow the so-called "cycle algal", for which it is unthinkable to have a reactor with the same culture, as a minimum it serve 2, but better still more than 2, so as to start a culture, withdraw an inoculum for the second, because the first will be so when we collapsed the second in full swing and we could start the cycle again. With only 2 bottles we can not afford mistakes ... almost

• Step 1: latency or adaptation, lasts 24 hours and the cells adapt to new environment
• Phase 2: development, at this stage is reached the peak of reproduction of cells takes 3-4 days
• Step 3: stationary, at this stage the cells stop almost to reproduce lasts 7-10 days
• Step 4: Final, the cells begin to die (end of cycle)

The cultures of phytoplankton are agitated at least once a day, to prevent sedimentation, and above is required much caution in handling anything that comes into contact with cultures, it takes little to bring the bodies antagonists that ruin everything! Theoretically we should operate in a sterile environment we can not ... but just because the house is preferable to use more careful and separate bottles so that we are losing some of the other to continue the cultivation of Phytoplankton.

We know that you can keep in the aquarium some coral is not photosynthetic, whose power depends entirely on food "solid". It is not unusual to find a couple of these corals in aquariums even some large, possibly with sand bottom or DSB. While it is much harder to see an aquarium like the video below, almost full of Gorgons, Tubastrea, Rhizotrochus , Dendronephthya (how good this Antozoo Alcyonarians of the colonial order, also called "Christmas Tree"?) .
Then look at the video I recommend it to everyone ... keep everyone aware of the fact that these animals means a big commitment feeding "manual" for the owner, or a meticulous system of automated feeding live food.