he is very impressive, doesn't look like he was doing to bad with his previous mate before coming into your possession if that what he has grown into. it possible the bond was broken (temporarily or not) in the move/relocation... you also have to expect a bit of aggression amongst pairs when kept in slightly less than ideal space. In my experience larger female smaller male pairings are very volatile and seldom work beyond spawning or long term and usually end with a dead male. i dont think you will be successful with you scaping attempts either lol. I have never met an Amph that lets you have your way with decorating their home. i have seen some in naturally planted tanks even kept with swords and mollies but those were spectacular examples that their are always exceptions to the norm. keep trying you and him may find a compromise eventually lol
A week into it, and I've given up. I tried making a barrier with some driftwood to keep him away from the plants, but he got around that. I drilled some small holes in a flat piece of acrylic and put the plants through, then buried the acrylic, but he just decided to start burying the plants. So he won - I took all the plants out, and now he's just got the sand, a few rocks and some small driftwood pieces. I can't see how he could like that better than having some heavy cover to swim through, but if he's happy then I guess I'm happy.
Sent from my Desire HD using MonsterAquariaNetwork App

To me thats part of the attraction for the amphs they are kinda like a naughty puppy that digs up your flower bed.