Yeah! Have definitely had some glue kill some Anubias. It might be related to some random chemicals/binders in certain brands of glue as well, not just the QTY of glue used.
I'm not an aquascaper in any way. I love the look of an over planted aquarium. Unfortunately, I bought some Buenos Aires Tetras for my 55 gallon and they decimated my plant in a few weeks. I ended up moving the surviving plants into another aquarium. It never occurred to me that the fish would tear the plants up.
I have a decent amount of experience with anubias. If you want a higher rate of return, take the rhizome out of the water, cut the rhyzome into 1-2 cm pieces and plant the rhyzome on top of soil. Make sure its in a moist environment + light.. in a few months, you will have 10s to 100s of anubias (depending on how many pieces you cut your rhyzome into. I'll link to my short video. I had a over 95% success rate on this method of propagation.
I'm currently trying to do this with bucephalandra (just started an experiment yesterday), I will upload a video later today, and will likely upload videos on the progress of the buce.
When I do the same thing, i use an airstone and just have it on the floor near a tank. I've kept it there for at least many weeks without major issues. I think the stagnation of the water might've just done you in! :(
