please tell me what this is????

[nanonick4710]

I noticed this on one of my rocks a few days ago. Its pretty big so im sure its been there for a while. I just dont know what it is. Any help would be great. Thanks

 

[pat8you]

Looks like aiptasia. Top critter on this site

Get some joe's juice and kill them before they start to spread.

 

[Innovator]

It is indeed aiptasia. You can make your own injectable by purchasing Calcium Hydroxide or Mrs. Wages Pickling Lime (grocery store) and mixing with fw or sw (I prefer sw). Half a spoonful of either and a little water creates a creamy-watery liquid easily taken in through a syringe. Inject .05ml (cc), depending on aiptasia size, into the stalk and then release .1ml (cc) onto the tentacles. The mixture can even be heated beforehand to increase potency. Here are two references as to what Calcium Hydroxide looks like (many brands retail this) and Mrs. Wages:

http://www.marinedepot.com/ps_ViewItem~SearchStr~esv%20kalkwasser~action~view~idProduct~EV2102~idCategory~FIADCAKW~category~E.S.V._Calcium_Hydroxide_4_lb_Saltwater_Aquarium_Supplies_Additives_Calcium_Kalkwasser~vendor~.html
What Your Grandmother Never Told You About Lime by Randy Holmes-Farley - Reefkeeping.com

 

[tamra&steven]

yeah you want to get rid of that little guy