"One man's trash is another man's treasure!"

You have collected some really good stuff for fish structures.

I would suggest reading through some of the old threads in the Creating Habitat forum. (You can skip most of the irrelevant ones just by scanning the titles.)

Here is a link to a good thread.

https://forums.pondboss.com/ubbthreads.php?ubb=showflat&Number=533961

Scroll down to FireIsHot's entry to see a few of the possible types of PVC trees.

There are MANY more good ideas in that forum!

Good luck on your giant 200 acre "pond"!