Need comments before applying PVC glue

[Ontheway]

I just finished plumbing measurements, cuts and other work related, and before applying PVC glue to make things permanent, I wanted to receive your opinions to avoid troubles currently hiding from me. Please see the pics below and I can take more, if needed. TIA,

Alp

 

[Ontheway]

more pics

more pics

More pics.. The last pic, there is a rubber washer pushing to backwall glass from the overflow side (water side), the outer one has no washer, pushing to black vinly directly. Tubing size is 1".

 

[cal3v]

Looks good, if it were me I would add some unions onto the lines to make it easier to clean/eventually move etc. But otherwise looks like it will work well.