Yes
Hi,
Is it safe for discus?
Gorilla 7700108 20 Gram 2-Pack Super Glue Gel, Clear https://www.amazon.com/dp/B07MWR845K..._ec8NDbTMCRWB4
Thanks
Yes
Will this glue work on wet wood?
Yes, but do dry off both surfaces as well as possible.
Mama Bear
The gel is good because it is thick and holds its shape better.
With that said, you can always go for CA Accelerator like this: https://www.amazon.com/Starbond-Inst.../dp/B00BUVAY9K.
I know a lot of folks like to use cigarette filters as a base and glue plants to that. The filter dries hard very quickly so you don't have to hold down plants for long.