Anubias Nana - Keeps dying?

Can you define dying? Are the leaves turning yellow and then fading away, or is something else going on?

How far away from the surface of the water are the plants located, and does your water test just fine (do you have fish in there, shrimp, or any other sort of livestock)?

Do you have a lot of light shining on the plant? This can be what causes it to die if you do. The anubias nana plant likes to grow in the shade so that could be one cause.

Hope you get to the bottom of what is happening.

Ah, mate, sounds like you've got a bit of an Anubias nana mystery on your hands! It's a bummer when your plants keep kicking the bucket, ain't it? Anyways, let's try to figure this out: make sure your water's all good and dandy, check those light levels 'cause these plants like a bit of shade, and maybe keep an eye out for any hitchhikers in the tank that might be causing trouble. Hopefully, we can crack this case and save your green pals from their untimely demise!

Sounds like you're dealing with an Anubias nana soap opera here! First things first, these plants are pretty hardy but can be fussy about a couple of things. Like the others have said, these guys aren't sun worshippers and hate direct lighting, so if your LEDs are cranked up, they might be crying out for a shady corner. Try dialing the light down or moving them to a spot where they get some shade.

Next up, check out the rhizome. Anubias hate having their rhizome buried in substrate, so if it's tucked in there nice and snug, it’s on the fast track to rotting city. Make sure it's sitting pretty on top of the substrate or tied to rocks or driftwood.

You're saying water parameters are fine, but make sure the water isn't too warm—these plants like it cooler. No roomies like pesky algae or persistent snails munching away at them, either.

Last but not least, maybe the plants you got weren’t in the best shape from the start. Sometimes they’ve been sitting in unhappy conditions before they even get to you, making them more likely to bite the dust. Good luck, and let's hope your Anubias nana makes a comeback!