plumbing questions

[vcnt]

1) Do I need to glue the in-tank pvc of a bulkhead?
2) How can I do an over-the-back return pump, without drilling? Do I need 2 90s?
3) What kind of drain setup do I use with 2 holes in the bottom of the tank, I already have manufactures provided (Aqueeon) Durso stand pipe and I was thinking of a full siphon for the other drain, just a pipe with a strainer on top. Should this be lower or higher than the Durso?​

 

[vcnt]

1) Do I need to glue the in-tank pvc of a bulkhead?
2) How can I do an over-the-back return pump, without drilling? Do I need 2 90s?
3) What kind of drain setup do I use with 2 holes in the bottom of the tank, I already have manufactures provided (Aqueeon) Durso stand pipe and I was thinking of a full siphon for the other drain, just a pipe with a strainer on top. Should this be lower or higher than the Durso?​

bump