1.5" bulkhead closed loop plumbing

[HLand]

I have never plumbed a closed loop system before. Recently purchased a 300 gallon aquarium with 1.5" bulkheads on the returns. Having a difficult time deciding what the best way to connect the 3/4" loc-line. Any links, tips, info you can share? I haven't purchased and loc-line or adapters just yet.
Thanks in advance!

 

[mfinn]

With something like this on Amazon
I'm sure you could find this in black or just use a rattle can.

Spears 439 Series PVC Pipe Fitting, Bushing, Schedule 40, 1-1/2" NPT Male x 3/4" NPT Female​

Brand: Spears Manufacturing

 

[ca1ore]

What size bulkhead is on the suction side; and what kind of pump do you plan to use? Seems a shame to constrict things down to 3/4". Why not use something like this:

https://vividcreativeaquatics.com/shop/1-5in-random-flow-generator-rfg150/
Pair it with the Vecra L2 and you'll have all the closed loop you can handle.

 

[Snoopy 67]

NEVER restrict the suction side of a pump!