I wonder how long it would take for them to get annihilated by adding 3-4 Nudibranchs. I almost want to grow out an Aptasia tank like that and see lol.
To me that doesn't look like typical aptasia - which tends to be longer stalked - unless im not seeing it correctly - when I first saw it - I thought it was Xenia. But admittedly a couple look like aphasia (but I still don't think its aptasia)