This tank was set up in January and has been added to gradually since then. I've had anubias in there from the start. Obviously the ones that were added earlier on are doing better because they've had time to establish themselves. I don't know where they're coming from, but lately I've noticed a lot of leaves floating at the top of the tank - Anubia sleaves that have fallen off. I must have taken out at least ten. I think the reason might have been I packed them in too closely and didn't give them enough space to themselves. I've sorted this out, but even so if this doesn't work has anyone got an ideas/suggestions/whatever? The tank is 28l, 11w lighting, good filtration, I only dose Flourish Excel and TPN+ whenever I get a chance, which is basically once every month.