Sponge or not?

shogun1964 · Mar 15, 2018

I have this yellow mass growing under one of my live rocks. Is it a sponge and would it grow better if I flipped the rock over to get better light?

DSC reef · Mar 15, 2018

It's sponge. Harmless filter feeder. Turning the rock over won't make it grow faster. Growth rate usually depends on food/nutrients in the water column

Sponge or not?

shogun1964

Active Member

DSC reef

Coral wasted

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