Spots on coral

[Randy954]

Hi all,
I am new to the forum I've had a 150 gallon that I purchased used and stocked pretty well. Just had a water change levels are all good 4 t5 lights but I'm seeing brown spots on one new coral I put in last week. Teck said not to worry but I am any help would be appreciated. The rest of the tank looks great but I'm also noticing these little blue starfish are they a nusance?
Thanks

 

[Randy954]

Photo didn't attach

Tecknical difficulties lol

 

[54seaweed]

looks more like a blue mushroom to me . with out pict s of the coral i would think it may be cayno build up

 

[Randy954]

Thanks

I can't post more than 1 picture for some reason?
Definetly have seen about 5 baby blue stars

 

[Sniperhank]

I'm not sure about the starfish, but I do see sand there that seems to be irritating your corals.


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[SeanMonster]

Looks like that brown plating algae.




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