I just purchased anubias nana plant from my local fish store,i am new to planted tank so i need some advice , is it okay to use the rock in the pic or is it to big , and do i need to trim the roots. One leaf in the other pic does not look to good should i pinch that off or leave it as is.
Anubias doesn't like its rhizome planted so I would remove that cup thing off its roots and rhizome (which is likely why its leaf is yellowing). Then, like java fernm you can anchor it to driftwood or free float it and things should be good.
Mine is anubias nana too and I just partially dug it into my gravel so the caterpillar-like rhizome is sticking out but the roots can dig in (and there are roots growing around piecs of gravel). I get a new leaf like weekly.
I'm not sure if there is a limit to the tightness of the binding but put it in like that and watch for growth. I don't know if my anubias is different bc the rhizome is much greener.. One sec I get a pic.
I noticed that my anubias' roots that are kept above substrate began to turn green after a while, one of them actually lost ALL its leaves but quickly sprouted 6-7 leaves all at once. I think if some roots are green it helps with photosynthesis just in case it loses all its leaves.
once the plant shoot out new roots it will attach pretty quickly. i wouldn't trim the roots that are already long.
my anubias floated around my tank for a while until the roots grew and touched my ceramic plate i use to grow fissindens.