The mosses got from the river side. Managed to get them stay on the gravel, rock and mongrove wood. The tank side is around 0.5 height. 1ft long n deep. Sharing a 18W FL light tube with another 8inch nano tank. A 6" DC fan running 24 hours. Photoperiod is from 8pm-8am. DIY CO2 which connecting to internal filter. Managed to get 25C. And finally saw the mosses bubbling. There are 5 bumble bee gobies.