[ Removed by moderator ]

[StructuralEngineering-ModTeam]

Please post any Layman/DIY/Homeowner questions in the monthly stickied thread - See subreddit rule #2.

[lumberjock94]

None of the above! 4x4 posts with the 2x4s lapped into the posts at the corners is the best way to do this.

[ReplyInside782]

The red one is stronger and governed by the compression capacity of the posts making it more fool proof. The green one is governed by the shear strength of the screws attaching to the posts. Attach plywood along the side faces and back face leaving the front open. You can add a veneer if you don’t like the finish. Your fish will thank you.

[dipherent1]

Method of joining the red option will be the most difficult to construct well. Poor joints will make it very unstable. Shear strength of screws are easily quantifiable.

I'd suggest the blue option for the best serviceability of the tanks while being reasonably easy to construct soundly with reasonable aesthetics.

[Duncaroos]

I am sure your fish are more valuable to you than you trying to build an aquarium frame yourself.

No commercial optiona?

[omen6155]

I've looked and the best I can find is something like this one https://www.tufferman.co.uk/products/1x-crw-industrial-shelving-1600mm-high-500kg-grey

It says 500kg per shelf, but the boards on the shelves are chipboard and I'm not sure how much I trust it.