Help with on the go Ritteri!!!

I purchase him about 6 months ago, I placed him my 90g where he moved all over the place, he wouldn’t stay put for more than a week or two and then move again, water parameter was almost perfect as I check my water 3-4 time a week, I recently down graded to a 70g cube with a single 250 mh, place him in that tank and still wont quit moving! I don’t know what to do, I've tired placing a small power head over him, not directly at him just over him, I tried moving and feeding him, nothing seems to work. Anyone know of something else I can try, I want to keep him put I wont have him killing all my corals cause he wont stay put!
 
Place it on a high point in the rocks, where it can't detect a path to higher ground. Give it good flow and lighting and it wont go anywhere. Magnifica's usually don't move down hill.

Like this.
sn851738editedpu4.jpg
 
I have fed it and placed it at the highest point in my tank, might have too get another piece of rock to go higher for it, he's also going up my over flow box...I guess trying to get higher
 
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