First to do

[edc_aquarium]

Okay so I have a 55 gallon tank for my main display a 20 gallon tank for my sump what should I do after that

 

[Crabs McJones]

Okay so I have a 55 gallon tank for my main display a 20 gallon tank for my sump what should I do after that

What other equipment have you rounded up? (if any)

 

[edc_aquarium]

What other equipment have you rounded up? (if any)

I have my return pump

 

[Crabs McJones]

I have my return pump

I would strongly suggest giving this post a reading. A lot of helpful information.

https://www.reef2reef.com/threads/the-supreme-guide-to-setting-up-a-saltwater-reef-aquarium.138750/