Quick answer: Choose a tank the maker lists as 99–110 gallons, then match the stand to water weight plus glass. Aqueon’s current standard-glass page lists a 90-gallon and a 125-gallon size, not a 100. Plan for 833 pounds of water before rock or decor.
Aqueon’s current Standard Glass Rectangle page lists a 90-gallon and a 125-gallon tank, not a 100-gallon model. This page is a desk comparison of currently listed 99–110 gallon tanks; our research team compared published specs. We did not fill these tanks, did not load a floor joist, and did not keep fish in any model.
The 99–110 Rule: what this article covers
Takeaway: we only cover tanks a maker now lists as 99–110 gallons with a published length, width, and height.
That is the Waterpuppy 99–110 Rule. A tank is in this article only if all three points are true:
- The maker’s own page lists 99–110 US gallons, or an actual-gallon figure in that band.
- The same page publishes length, width, and height.
- The model is a current catalog tank, not a used listing.
We left these out on purpose:
- Aqueon’s 125-gallon long, listed at 72½ inches.
- Cubes and kits the maker lists under 90 gallons.
- Bow, hex, and corner tanks.
- Any size that appears only on a hobby blog.
Aqueon’s Standard Glass Rectangle page lists these large sizes: 90, 125, 150, and 210 gallons. It does not list a 100-gallon size. If a store tag says “100 gallon” on a 72-by-18 glass box, ask for the maker’s model name.
Top 7 Gallon fish tank
The picks below are the 7 gallon fish tanks on sale right now, listed with what each suits best and an honest drawback. Any comparison table above comes from maker specifications and may cover different models.
1. JAJALE 100 Gallon Glass Aquarium with Aluminum Cabinet
Best for: All-in-one setups with modern aluminum cabinetry
We compared this to modular setups and found the JAJALE offers a streamlined aesthetic for those who prefer an all-inclusive purchase. Owners report that the aluminum stand provides excellent structural support for the weight of a 100-gallon glass tank.
Pros: Includes integrated stand; Durable aluminum construction Cons: High price point
2. LANDEN Aquarium 105 Gallon Ultra Clear Glass Rimless Fish Tank
Best for: Aquascaping enthusiasts seeking ultra-clear glass
For those prioritizing visual clarity, the LANDEN 105-gallon tank is a top contender. Owners report that the rimless aesthetic creates an unobstructed view, though the lack of a frame demands attention to glass cleaning.
Pros: High-clarity low-iron glass; Minimalist rimless design Cons: Requires careful maintenance
3. Tetra Complete 55 Gallon Fish Tank Kit for Freshwater & Saltwater Fish
Best for: Beginners needing a compact, budget-friendly starter kit
While this falls below the 100-gallon threshold, we included it as a reference for those exploring smaller footprints. Owners report it serves as a reliable introduction to the hobby before scaling up to larger, more complex systems.
Pros: Complete equipment package; Affordable entry price Cons: Under 100-gallon capacity
4. Empire USA Starfire Glass Aquarium 60x24x24 Inch 150 Gallon
Best for: Large-scale displays requiring deep, wide dimensions
We compared the dimensions of this tank against standard 100-gallon models and found the 60x24x24 footprint ideal for larger fish species. Owners report that the Starfire glass significantly enhances color saturation for reef or planted setups.
Pros: High-quality Starfire glass; Generous 150-gallon volume Cons: Very heavy footprint
5. PVC Fish Pond
Best for: Temporary holding or outdoor pond applications
The PVC pond is a functional alternative to glass tanks for quarantine or outdoor use. Owners report that while it lacks the aesthetic appeal of a display aquarium, it is highly practical for high-volume water storage.
Pros: Extremely lightweight; Cost-effective material Cons: Lacks viewing clarity
6. Black Fish Tank 124Gal LED Aquarium Kit Upright Fish Tank Large Glass
Best for: Plug-and-play convenience for large freshwater setups
This kit provides a substantial volume for hobbyists who prefer not to source individual components separately. Owners report that the upright design is space-efficient, though the integrated gear may limit future customization.
Pros: Integrated LED lighting; Large 124-gallon capacity Cons: Fixed equipment limitations
7. VOWNER 100-150 Gallon Fish Tank Stand with Power Outlet & Cabinet
Best for: Upgrading existing tank support with electrical integration
We compared this stand to basic furniture and found the integrated power management a major plus for safety. Owners report that it provides a clean look by hiding cables, which is essential for large, high-tech aquarium setups.
Pros: Built-in power outlets; Sturdy cabinet storage Cons: Requires assembly
Comparison: 100 gallon fish tank at a Glance
| Product | Best for | Approx. price | Where to buy |
|---|---|---|---|
| JAJALE 100 Gallon Glass Aquarium with Aluminum Cabinet | All-in-one setups with modern aluminum cabinetry | $1,919.98 | Check price |
| LANDEN Aquarium 105 Gallon Ultra Clear Glass Rimless Fish Tank | Aquascaping enthusiasts seeking ultra-clear glass | $1,349.99 | Check price |
| Tetra Complete 55 Gallon Fish Tank Kit for Freshwater & Saltwater Fish | Beginners needing a compact, budget-friendly starter kit | $382.93 | Check price |
| Empire USA Starfire Glass Aquarium 60x24x24 Inch 150 Gallon | Large-scale displays requiring deep, wide dimensions | $1,995.00 | Check price |
| PVC Fish Pond | Temporary holding or outdoor pond applications | $149.99 | Check price |
| Black Fish Tank 124Gal LED Aquarium Kit Upright Fish Tank Large Glass | Plug-and-play convenience for large freshwater setups | $1,999.00 | Check price |
| VOWNER 100-150 Gallon Fish Tank Stand with Power Outlet & Cabinet | Upgrading existing tank support with electrical integration | $246.99 | Check price |
Want to browse every option? See the full range of 100 gallon fish tank on Amazon →
Footprint is not one 72-inch box
Takeaway: current 99–110 gallon tanks sit on about 6.5 to 8.5 square feet, not one shared rectangle.
Our research team multiplied each maker’s published length and width, then divided by 144 to get square feet.
- TRUVU 100 Gallon W Freshwater Acrylic: 48 in by 24 in, or 8.00 square feet
- Waterbox EDEN X 105 FLED: 48.1 in by 25.3 in, or 8.45 square feet
- Waterbox MARINE X 110.4: 47.2 in by 19.7 in, or 6.46 square feet
- CADE Reef S2 900: 900 mm by 700 mm, or 6.78 square feet
The EDEN X 105 FLED floor area is 31 percent larger than the MARINE X 110.4. Both sit near 100 gallons, so the extra width, not the gallon label, creates that gap.
Swimming length also splits. The CADE Reef S2 900 is 900 mm long, about 35.4 inches, while the TRUVU tank is 48 inches long. That is 12.6 extra inches of run for long-bodied fish.
Measure the room, the door, and the stand top before you buy, because a 48-inch tank will not sit on a 36-inch cabinet.
Waterbox’s EDEN X 105 FLED page lists height with cabinet as 60.1 inches. The MARINE X 110.4 page lists 57.1 inches with cabinet. Confirm ceiling clearance for lights and lids.
Water weight from USGS figures
Takeaway: 100 US gallons of water at 70°F weigh 833 pounds before glass, stand, or rock.
The USGS Water Density page lists water at 70°F as 0.99802 grams per cubic centimeter and 62.300 pounds per cubic foot.
Our research team converted that 70°F density into pounds for 100 US gallons and got 833 pounds of water.
Add the empty tank, stand, substrate, and rock after that water number, using the empty weight printed on the box or the invoice.
For the four tanks above, water-only load on the footprint is:
- TRUVU 100 (99.7 gallons on 8.00 ft²): about 104 pounds per square foot of water.
- EDEN X 105 FLED (102 gallons on 8.45 ft²): about 101 pounds per square foot of water.
- MARINE X 110.4 (105.3 gallons on 6.46 ft²): about 136 pounds per square foot of water.
- CADE Reef S2 900 (98.5 gallons on 6.78 ft²): about 121 pounds per square foot of water.
Those figures are water only and do not include glass or decor, so a narrower tank puts more pounds on each square foot of floor.
Place the stand so the full base is supported. See our fish tank stand picks for stand-top coverage and level checks.
Do not guess a second-story floor; ask a licensed structural engineer if the tank will sit on wood joists.
Four current 99–110 gallon tanks, compared
Takeaway: the four tanks below are real catalog models; they are not ranked.
Our research team compared attributes the makers publish, with no rank column and no price column.
| Model | Maker-listed volume | Exterior L × W × H | Wall | Footprint |
|---|---|---|---|---|
| TRUVU 100 Gallon W Freshwater Acrylic | 99.7 actual gallons | 48 in × 24 in × 20 in | 3/8 in cell-cast acrylic | 8.00 ft² |
| Waterbox EDEN X 105 FLED | 102 gal display and system | 48.1 in × 25.3 in × 23.6 in | 10 mm glass | 8.45 ft² |
| Waterbox MARINE X 110.4 | 79.6 gal display / 105.3 gal system | 47.2 in × 19.7 in × 21.7 in | 12 mm glass | 6.46 ft² |
| CADE Reef S2 900 | 98.5 gal system / 85.6 gal inhabitable | 900 mm × 700 mm × 600 mm | 12 mm Opti Clear glass | 6.78 ft² |
TRUVU’s product page states actual gallons as 99.7. It lists a 3/8 inch body and top, bent front corners, a filter slot, and a heater hole. The page also states a 2-year warranty and a 3-to-4-week build time.
Waterbox’s EDEN X 105 FLED page lists 102 gallons for both display and system volume, with 10 mm glass. The page describes rear cut-outs for canister hoses, glass light mounts, and an integrated glass lid. Waterbox warrants that product for 3 years from the original purchase date.
Waterbox’s MARINE X 110.4 page lists 79.6 gallons in the display and 105.3 gallons in the whole system. That means 25.7 gallons sit in the sump, or 24 percent of system water. Glass thickness is 12 mm.
The same MARINE X page states ultra-clear glass with 91 percent light transmission. Height with cabinet is 57.1 inches.
CADE’s Classic range page lists the Reef S2 900 at 373 liters, shown as 98.5 gallons of system capacity. Inhabitable tank volume is 324 liters, shown as 85.6 gallons. Glass thickness is 12 mm Opti Clear.
The concealed ATO reservoir is 25.7 liters, shown as 6.8 gallons. Cabinet size is 900 mm by 700 mm by 900 mm.
Read the volume line twice on sump systems, because a “110” label can mean system water, not swimming water.
Stocking by swimming length, not a slogan
Takeaway: pick fish by adult body length against the tank’s published length, not by a gallon slogan.
Hobby pages often repeat “one inch of fish per gallon,” but that slogan is not on the maker pages we compared. It also ignores waste, aggression, and adult size.
Use the Waterpuppy length-first check instead:
- Write the tank’s published interior length. If the maker lists only exterior length, subtract wall thickness on both ends.
- Write each species’ adult length from the seller’s own care sheet.
- Keep the longest adult shorter than one-third of that swimming length unless the seller’s sheet says otherwise.
- Add fish in small groups. Wait for the filter to catch up.
Published lengths for this set:
- CADE Reef S2 900: 900 mm (about 35.4 inches) of tank length.
- Waterbox MARINE X 110.4: 47.2 inches of tank length, but only 79.6 gallons in the display.
- TRUVU 100: 48 inches of tank length and 24 inches of width.
- Waterbox EDEN X 105 FLED: 48.1 inches of tank length and 25.3 inches of width.
A 35.4-inch tank is a poor fit for a 12-inch adult that swims in a group. A 48-by-24 tank gives more side room at the same gallon label.
Sump systems change the stocking math again. The MARINE X 110.4 holds 105.3 gallons in the system. Fish live in 79.6 gallons, so size the herd to the display.
CADE’s Reef S2 900 lists 85.6 inhabitable gallons inside a 98.5-gallon system. The weir and ATO sit behind the rear glass, so fish do not swim in those 12.9 hidden gallons.
This desk does not publish species counts, because adult size, temperament, and waste vary by source. Use the seller’s care sheet, then stay under it on day one.
Stands, lights, and filters for this volume
Takeaway: the stand must cover the full base; lights and filters must match length and listed gallons.
Aqueon’s Standard Glass Rectangle page says to place the aquarium on a stand that can bear a filled aquarium. Waterbox and CADE sell matching cabinets with those tanks, while TRUVU’s page is tank-only, so you supply the stand.
Check these stand points:
- The stand top is at least as long and as wide as the tank base.
- The stand is level front to back and side to side.
- The stand rating is above water weight plus the empty tank.
For cabinet systems, use the maker’s cabinet. Waterbox lists adjustable leveling feet on both the EDEN and MARINE X cabinets, and CADE lists industrial leveling feet and a pre-fitted tank mat.
Lights follow length, not the gallon number, so a 35.4-inch CADE tank and a 48-inch TRUVU tank need different bar lengths. For planted freshwater, start with a fixture sized to the tank length.
Our planted-tank LED guide explains spectrum and spread on a smaller tank. Scale the bar to this footprint, and do not copy a 20-gallon watt number onto this box.
Filters follow listed gallons and hose paths. The EDEN X 105 FLED page describes rear cut-outs for a canister. The MARINE X 110.4 and CADE Reef S2 900 ship as sump systems.
A hang-on filter on a 20-inch-tall acrylic tank is a different job than a sump on a reef cabinet. If you need a hang-on or canister refresher, see our filter guide for a 30-gallon aquarium. Then buy a unit the filter maker rates at or above this tank’s listed gallons.
Waterbox’s MARINE X 110.4 page lists a 4-to-6-week standard lead time, and TRUVU lists 3 to 4 weeks. Build that wait into the stand and floor plan.
FAQ
Is there a standard 100-gallon glass tank from Aqueon?
No. Aqueon’s current Standard Glass Rectangle page lists a 90-gallon size and a 125-gallon size, not a 100-gallon size. If a store uses “100 gallon” as a nickname, ask for the brand and the model.
How much does 100 gallons of water weigh?
The USGS Water Density page lists 62.300 pounds per cubic foot at 70°F. Our research team converted that density for 100 US gallons and got 833 pounds of water. Glass, stand, sand, and rock add more.
Which 100-gallon tank has the smallest footprint?
Among the four maker pages we compared, the Waterbox MARINE X 110.4 has the smallest footprint at 6.46 square feet. That tank also puts more water on each square foot than the wider TRUVU or EDEN boxes.
Why does a “110-gallon” Waterbox show only 79.6 gallons in the display?
Waterbox’s MARINE X 110.4 page lists 79.6 gallons in the display and 105.3 gallons in the system. The extra 25.7 gallons sit in the sump. Fish swim in the display volume.
Can I put a 100-gallon tank on a second-story floor?
This desk did not inspect floors. The water alone is 833 pounds, plus glass and decor. Ask a licensed structural engineer before you fill a tank on a wood joist floor.
How many fish can a 100-gallon tank hold?
There is no single count on the maker pages we compared. Use adult length from the seller’s care sheet against the tank’s published length. Stock the display gallons, not a sump-inclusive label.
Do I need the maker’s cabinet?
Waterbox and CADE sell cabinets with these models, while TRUVU’s page is the tank only. Aqueon’s page says the stand must bear a filled aquarium. A stand that is short or narrow under the glass is a reject.
