I have been doing this for 2 months on 2 big pieces of Mopani in my 125 Gallon. What I do is super glue Java Fern to cracks in the wood. After 2 months, it's all still alive, all still green. I'm still waiting on new leaves to start sprouting, but not yet. Seems people with marine tanks use super glue all the time for thier rock formations. They even put the tube under water, drop a dab to stick stuff, and it cures and sticks underwater. I haven't gotten that slick yet, I just take the wood outta the tank and glue the Java Fern. Another thing I DIDN'T do but wish I did. I got my Java Fern in the mail very well sewn on this straw mat. I cut the threads, pulled the individual root pieces out of the mat, glued it to the wood. What I SHOULD have done was just cut the mat in 3-4 pieces, and glued the mat pieces to the wood. Would have saved me a lot of time and alot of glue. Also, big Vallisneria plants are incredibly tough. Stick em in sand, they come out all the time for the first few weeks, but once they start sending out runners, they stay put. They rot for a few weeks, but after that's over, they send out new leaves and make runners, they're solid. Fish won't touch em. Hornwort is a total mess. Java Moss is a total mess.Look for "cyano-acrylate" on the label. And try to find one that's kinda thick. Last one I bought was real thin, not as good cause it runs down the wood before it dries.
