Here's the Ocean (Limestone) rock I'm going to hang near the surface in the Opae ula tank,
when the Algae has grown some more,
Opae ula Algae rock.jpg (247.83 KiB) Viewed 4652 times
with it being a tall tank I think it'll give them more area to explore and crawl about on
20-5-18 tank.jpg (243.23 KiB) Viewed 4652 times
at the moment they quite often 'park up' on the heater after swimming near the top
20-5-18 heater.jpg (80.2 KiB) Viewed 4652 times
the Oxygen bubbles are too fine to see head on but from the side
20-5-18 Oxygen.jpg (245.73 KiB) Viewed 4652 times