Schematic for 120 gallon aquarium

For a 4 foot wide tank, you only need a 2x4 top frame, not 2x6. My LFS has multiple 4 ft x 4ft tanks that just have a 2x4 top frame with 4 x 4 posts at the corners that go down to the concrete with 3/4 plywood on top. They have had these tanks up for 10+ years, no issues, no bowing / sagging.
 
You can always go watch king of DIY on YouTube. That’s how I started my build.
 

WHAT DO YOU ALWAYS RUN OUT OF AT THE WORST TIME?

  • Salt mix

    Votes: 12 16.2%
  • Fish or coral food

    Votes: 4 5.4%
  • Test kits or reagents

    Votes: 7 9.5%
  • Filter media or replacement fleece

    Votes: 4 5.4%
  • RO/DI filters or supplies

    Votes: 13 17.6%
  • Fragging and repair supplies, like glue or epoxy

    Votes: 8 10.8%
  • I keep a backup of everything

    Votes: 20 27.0%
  • Other (Post in the comments)

    Votes: 6 8.1%
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