This is still in the smaller end of aquarium technology and is classed as a Nano Aquarium. These small aquariums make it easier on the budget to get into saltwater or provide you with a beautiful tiny piece of the ocean in any room you desire.
There are some great All-In-One (AIO) Kits available as well as tank and sump separate systems. I’ll cover a few here to give you an idea of how to set one up that may fit your needs perfectly.
These are my recommendations and what I would look to buy if I were to set up an aquarium in this size range:
Coralife BioCube 32G Kit
A great beginner kit that has been tried and tested for years. Great reviews and pedigree.
Ready To Go Cost Approx $905.00
Red Sea Max 20G Nano Kit
A designer Nano aquarium setup for anyone wanting a small showpiece in their home.
Ready To Go Cost Approx $1300.00
Waterbox Marine X 35.1
For the hobbyists that do not want an All-In-One aquarium but prefer a sump system.
Ready To Go Cost Approx $1460.00