Best 180-gallon aquariums for large reef + full tang stocking, large oddball setup. Top picks across budget tiers, what livestock fits, what to avoid, dimensions, weight, and FAQ. Updated May 2026.
Standard rimless 180g. The 24" depth front-to-back enables show-quality reef aquascaping.
Premium reef AIO turn-key. Slightly less volume.
Built-to-spec drilled glass tank with overflow.
Suitable:
Avoid:
Beyond the tank itself, you'll need:
Use the stocking calculator to verify your livestock plan, the weight calculator to confirm your floor can handle it, and the electricity calculator for ongoing operating cost.
Standard 180-gallon aquarium dimensions: 72"×24"×24". Filled weight ~1800 lbs.
~1800 lbs filled (tank + water + sand + rock). Standard residential floors support ~40 lb/sq ft live load - tanks of 180g+ should be placed over a load-bearing wall or perpendicular to floor joists.
Yes - small marine setups (FOWLR or nano reef) work in 20g+. The reef setup options for this size are documented on the 20g FOWLR setup guide.
Total 180-gallon build cost varies by tier: budget $1080-2160, mid $2160-4500, premium $4500-9000+. Use the reef build calculator for detailed breakdown.
Browse the full aquarium-by-size buying guide for 11 other tank sizes. Or jump to the step-by-step setup guides, the stocking blueprints, or the calculator collection.