My java moss isn't good for a moss wall, I have flame moss in the same tank an it grows fine with no ferts and one plant light bulb a T8 on a 5.5 gal. DIY CO2 mix.
My other tank has 2 T12 bulbs one is 20w the other is a plant bulb, I think is also 20w, ferts , root tabs, also DIY CO2 I have Anubis 2 species, Rotala, pennywort, 1 banana plant, 2 stems of hornwort, 1 Marino ball, java fern, dwarf sahittaria, non groing java moss wall, drift wood with java moss on it growing good. For fish I have 2 neons, 1 orange glow tetra, 2 glowlight tetras, 2 simese algae eaters, 3 Cory cats, 1 long fined pleco, glass/ghost shrimp, 1 yoyo loach, 2 fancytail guppies.
All the java moss I have set up as a moss wall wount grow for some strange reason, the guy I got it from had it floating in his tank could this be the problem? (Moss not floating)