I couldn't resist picking this one up - looked brown / beige under pet store lights... They called it a favia - but I'm used to favia's having more meat showing... Anyone able to give a better id?
This one I'm pretty sure I'd be safe calling this next one an acan echinata, but - notice how the whole edge has turned purpleish - it was solid green (like the center) with white 'splashes' when I first got it... Would I expect that color shift to continue (it's even happening on the shaded rim), or could this be signs of a problem?
Thanks in advance,

This one I'm pretty sure I'd be safe calling this next one an acan echinata, but - notice how the whole edge has turned purpleish - it was solid green (like the center) with white 'splashes' when I first got it... Would I expect that color shift to continue (it's even happening on the shaded rim), or could this be signs of a problem?

Thanks in advance,