You can attach it using a small dab of crazy glue. Moss doesn't adhere very well on its own, even if you tie it on... not enough texture on the surface for it to grab hold, I think.
30 g, fluorite, co2 pump – danios and moss balls - lots of other planted stuff
10 g, dwarf frogs, tetras, guppies, blue mystery snails
1 g, cherry shrimp / baby guppies / assassin snails
big fish bowl – betta
coming soon – custom “shrimpatarium!”