The return is built inside the overflow(used to be a SW tank) For the drainage I got pvc that threads onto the bulkhead and etc, the return is from what I believe 1.25 that needs to be threaded on, but I think 1.25 is good. Where the sump I added a 2x4 to support that open part, so I think its good now.
I have not test filled the tank, which is what is getting me most scared rigt now, but hopefully is good 2 go. do you have a picture on what ball valves look like, never seen those or didnt look but Ill check that out before I go out again.
View attachment 840494
Here is the tank,^
Ball valve Kai.
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