Good or bad

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I have a few things in my tank that are a little odd, to say the least. So the question is, besties, or beasties? Please give me some info on them and tell me what they are.

This is the little pink guy in the middle, completely different, in my opinion, to the last pink guy I posted.




This looks a bit like a cotton plants head, in a grayish version.




This little dude, in the middle, is completely white, and has been expanding at a rate of knots.




I think these guys look awesome, and they hitchhiked on my live rock, but I have no idea what they are, and if they are actually good, if they are, what are their requirements?



Thanks for any and all help I may get in advance.
 
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Last pic is some zoas :thumbup:

Yay! Thanks a bunch, I hear they are really cool, and the rock was cheap. Marine tanks rock. ^^

Thank you for telling me. I need all the help with these things I can get. I don't know what is good and bad, and Google doesn't always have the answers.
 

viper357

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Pics 1 and 2, no idea really but would hazard a guess as some form of sponge perhaps. Nothing to worry about. Pic 3, possibly a colonial anemone?
 
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Thanks for the help, guys. With your help and some offline help I have an ID on them all. The pink thing is Mijano, so it's going. The second is a sponge. The third is Aptasia which is also going and the last is zoas.
 

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Pink thing isn't majano, I'd leave it and see what it becomes. Majano are brown/green. Not all hitch hikers are bad
 
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Okay, so it's not actually Majano, I have three in the sump that I have seen so far, I almost killed the poor things. The pet shop told me it would sting everything to death. o_O So what are they then? Sorry, still very new to this.
 
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What must I do to maintain my tank then, with the zoas? Or should I sell them to someone who knows more about them and has a more mature tank?
 
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Don't worry about the zoas u will b fine it's only if u fragging them that they can b a issue. If the other stuff is majano then I'd leave them for now as they can b quite nice looking. If they start becoming a issue then do something. Aptasia on the other hand must b treated like the spawn of Satan and nuked
 
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What must I do to maintain my tank then, with the zoas? Or should I sell them to someone who knows more about them and has a more mature tank?
Just don't touch them then rub or eyes :tt2:

Lol but seriously, just be careful when handling them...
Nothing else special required for keeping them except good lighting.

Also make sure they are facing up to the light then you'll see them open up nicely.

The first pic looks like a small Vermetid Snail
however it looks like an empty shell of the Vermetid Snail...

They all look safe tho, nothing to worry about.
 
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The first one wanders around the live rock. It likes the light as well, that's why I thought it was a plant. Okay. No fragging of zoas is to be done without extreme caution. Noted. I bought myself a big bottle of Aptasia x and am already treating them nightly. My muscle doesn't like the Aptasia x though and tends to move away from the treated Aptasia. Is that normal?
 

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