New to salt id help

[cipolla6]

New to salt but I've kept freshwater for years. I bought an older established tank.with a good quantity of live rock. I was wandering around the dreaded petco today and happened upon a few interesting pieces of live rock and decided to grab em. Anyway after being in my tank for a bit they blossomed into these coral formations my questions are what are they I'm pretty sure two of them are zoanthid but I have no idea on the third any chance you could help out so I can look into the care requirements?

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[pinnatus]

The third are yellow polyps.

The Yellow Colony Polyp Corals are colonial animals with several individual polyps attached to a piece of live rock or coral rubble. They are bright yellow in color and their polyps have the ability to sting other polyps or corals. While the sting is not strong, they are semi-aggressive and need to have space between their colony and any neighbors.
Easy to maintain, the Colony Polyp Corals require a medium light level combined with a medium water movement within the aquarium. For continued good health, they will also require the addition of iodine and other trace elements to the water.

They will reproduce easily in the reef aquarium by budding (splitting off a portion of their base or mouth), which will increase the size of their colony.

They contain the symbiotic algae zooxanthellae which provide some of their nutritional requirements. They must also have additional feedings of micro-plankton or brine shrimp given to each individual of the colony.

 

[cipolla6]

Why thank you sir that takes care of one for sure.

 

[pinnatus]

The first two are zoanthids. Don't know what their names are.

 

[cipolla6]

thank you for your help sir. I paid 30 to get all three of those stones and a few chunks of other live rock how did I do on price for future reference?

 

[pinnatus]

Live rock runs from $3/lb to $5/lb last I recall. So if you got 10 lbs of rock you did fine. Those zoos and polyps are easily good for another $20-40 or even more depending on where you get them from. So, I'd say you did very well.

 

[cloak]

Check these out.

http://www.advancedaquarist.com/2003/2/inverts

http://www.saltyunderground.com/article_info.php?articles_id=52

HTH.

 

[coralsnaked]

Those Palys will take over your tank in a heartbeat, and many hobbiest consider them pests like aiptasia because it is extremely difficult to get rid of. So I would isolate them on those rocks by themselves as they will not cross the sand. But if you put them on one big rock pile in the long run this is all you will have.