My tank has been cycling for 3 months now, live rock, live sand, wave maker and bio filter. I’ve slowly added a cleanup crew 3 hermits, 2 emerald, 4 Asteria snails. I just spotted this structure today and have had no luck finding anything like it on the internet. I feel like I’ve seen it before though... any ideas?
I should mention, I have tested the water myself and found no issues, had it tested at the marine tank store (no issues) and am using reverse osmosis water for the tank.
I should mention, I have tested the water myself and found no issues, had it tested at the marine tank store (no issues) and am using reverse osmosis water for the tank.


