Help ID pls

[m_wtan79@yahoo.com.sg]

Hi guys i'm new to this hobby. Recently saw this 2 things growing in the tank. The 1st pic is like hairy and white look like fibre and the 2nd is like moldy. Is it dangerous for the tank?

Thanks

Btw the tank only house some fish only at the moment.

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[digibee]

First pic is aiptasia; it is a pest in tank.

Can't see clearly in second pic.

[m_wtan79@yahoo.com.sg]

Thank u. The 2nd pic is just a patch of moldy stuff.

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[digibee]

Moldy stuff are usually sponges;

I prefer to scrap them off the rock; as they could be already dead and will pollute the water.

[m_wtan79@yahoo.com.sg]

Ic thanks.

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[m_wtan79@yahoo.com.sg]

I finally found the ID for the 1st pic, its Chondria

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