1000 gallon pool pond. Three snook one 20 inches one 25 biggest one 28. Any monster fish that i can house with these guys that they wont get eaten by them or will bully the snook. Send your suggestions 

It will be hard to get them since i live in florida sadly :/welcome to MFK!
one of my personal favorite "true" Monster fish would be the barramundi, native to Australia, and have a similar shape to snooks. I find them very personable and remind me of chitala ornata or lopis with their funny long face shape when you view them from the front.
though I am unsure how aggressive they are towards other fish, they are definitely tanks of fish that I doubt most fish would mess with.
their max sizes and tank size also can be put into speculation but I believe a 1000g can suffice for an extremely long period of time
I think some catfish also fit the standard of such a large pool like tiger shovelnoses or big ripsaws, would probably stray away from tigrinus though, as they have many "bitable" parts like their thin flag tails and fins
Cool mate.
What filtration do you have on the pond?
Did you catch or buy the snook?
What do to feed them?
Can’t they be fresh or salt water?