white, coral type substance

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yaksplat

Aquarium Advice Freak
Joined
Jan 2, 2004
Messages
434
Location
orchard park, ny
anyone know what this white stuff is? It has some small black dots that have formed in it in the last few days.

white_coral.JPG



Thanks
Jim
 
There are many types of calcareous sponges. These CaCO3 formations can often look just like many types of encrusting corals rather than the sponges they are. Ever noticed those "jelly" looking formations laced together on the underside of LR or in darker areas of the tank? Those are another form as well.

Cheers
Steve
 
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