Foxface and Juvenile Orange Shoulder Tang

[jfenton954]

I've watched these two fish in my tank and it looked like they popped out rocks....???? Then I notice them eating the sand covered in algae. Is that ok or normal?

 

[nanoreefing4fun]

Some fish sleep in the rocks & wedge themselves in at night...

sure others can advise...

I would guess it's fine for them to eat the algae - I keep nori hung daily for my tang - one huge key to their health & them being able to fight off diseases like ich - imo

Here a great read...
A collection of Lee Birch's advise on feeding

 

[jfenton954]

Yeah but their eating the big chunks of sand

 

[StirCrayzy]

If they ingest any sand, it will pass through. My Tomini does this quite often, I just assume he knows what he's doing...