What is that on my live rock?!

hi guys,

i noticed this thing growing AND moving on my live rock. when i turn off the lights it moves to some place else but when i turn on the lights it moves to the top. what is it? a coral?!

( it's the brown mushroom like thing u see at the top of the rock )

 

I don't see any long tenticles, but I am tempted to call it aiptasia. Manajo are a little more on the squat side with shorter tenticles......Do you have a top down pic of it?

 

yea not a very clear one tho.. are they dangerous? there's 2 of them actually

 

i would call it a glass anenome.got three in my tank and they do spread best of without them.

could be wrong

 

I am still on the fence as to whether it is aiptasia. Aiptasia and manajo are nuisence anemones. They spread throughout the tank if left unchecked. If you have only two, you can take care of them yourself without the help of livestock. When I needed to get rid of mine, I did a two pronged attack. I bought a few peppermint shrimp to take care of the ones I couldn't get to. The others, I got with Joe's Juice. You can buy it commercially or make your own. I just took some Kalkwasser, mixed in some water to get a thinnish mixture and used a needle and syringe (3cc syringe with a 25 guage 1 inch needle) and injected a very little bit into it's mouth. DO NOT RIP IT OFF THE ROCK!!!!! Pretty much a sure fire way of getting it to spread.

 

ohh but is it gonna harm my fish if i leave it in there?? i mean it's not that bad looking to me

 

no should be fine as long as you keep them in check i have a massive one in the corner of my tank and i leave it be and the fish dont go near it;D

 

i dont think there aptasia as the tenticles are too stubby the top one kinda just looks like coral polyp of some type

also i would go with sand as it looks better then crushed coral. if you keep the cc you need to vacuum it religiously

 

i would like to have a sand bed too but my tank is just cycling for 10 days if i add sand would it disturb my cycle?

 

As soon as i saw this the first thing that popped into my head was Majano!