I think that glass dome might be a problem, if watered plant was sitting inside. Tillandsias need fresh air / opened space. If water can't evaporate properly and the plant stays damp for too long, it catches rot.

Then maybe it's overheat, as mentioned above, or underwatering. Water demands of tillandsias rapidly increase with temperature. Watering them once or twice every hot summer day makes them happy.

I just looked at your photos and I have bad news for you - that plant is definitely dead.

Fortunately for you, little ionanthas like the late (but compostable ergo reincarnate-able!) Craig are inexpensive to purchase on line (I don't know what you might have locally). I have read (on Rainforest Flora website, I think) that the Mexican form is less likely to rot than the slightly larger(?) Guatemala form. You can purchase sets of 5 or 10 ionanthas from various sellers, either of one kind or a mix of varieties (and I suggest single plants rather than a clump). Cost maybe $7 to $10 or so, plus shipping. This way, you can keep trying until you discover the best method to use in your environment.

Hi everyone.

Brandy - What's the round thing in the container with your plant? Maybe that's somehow involved in the equation also. Is that Spanish Moss in there as well? And what about the stuff that looks like brown Spanish Moss. All of these things could be restricting air circulation as well .

All the best, Nev.