33 Gallon Long tank dimensions
48×13×12inches
Length × width × height. In metric, 121.9 × 33 × 30.5 cm.
A standard 33 gallon long aquarium is 48 inches long, 13 inches front to back and 12 inches tall. Its measurements work out to almost exactly the volume on the label. Once you add gravel and leave a gap at the top, expect a little less water than that.
This size is less standardized than most. Check the maker’s listed dimensions before you buy a stand or lid.
How much a 33 gallon long tank weighs
Empty, the glass tank weighs about 47 pounds. Filled with water and two inches of gravel it comes to roughly 390 pounds, before rocks, wood or equipment.
A weight like this is fine on any sound floor, but it needs a stand built for aquariums: ordinary furniture is not made for a load that never moves.
| Empty tank | about 47 lb |
|---|---|
| Water (33 gallons) | 275 lb |
| Gravel, 2 inches deep | about 67 lb |
| Filled, with gravel | about 390 lb |
| Load on the floor | about 90 lb per sq ft |
Stand, lid, heater and filter sizes
The stand and the lid both follow the footprint, 48 by 13 inches. A stand has to support the whole bottom frame, so it can be bigger than the tank but never smaller.
The 33 gallon long has the same 48 x 13 inch footprint as the 55 gallon, so they share stands and lids.
For a heated tropical tank, a 150 W heater suits a normal room. Pick a filter rated to turn the water over four to six times an hour.
| Footprint | 48 x 13 in (4.3 sq ft) |
|---|---|
| Volume | 33 gal (124.9 L) |
| Heater | 150 W |
| Filter flow | 132 to 198 gal per hour |
| Typical glass | about 1/4 in thick |
What fish can live in a 33 gallon long tank
How many of each fish would fill this tank on its own. Mix species and the numbers come down, so plan a real community with the calculator.
- Betta1 only
- Neon tetraup to 36
- Ember tetraup to 54
- Guppyup to 18
- Harlequin rasboraup to 24
- Zebra danioup to 21
- Cherry barbup to 21
- Platyup to 21
- Panda coryup to 21
- Bronze coryup to 14
- Honey gouramiup to 6
- Dwarf gourami1 only
- Pearl gouramiup to 4
- Tiger barbup to 18
- Mollyup to 13
- Angelfishup to 3 *
- Fancy goldfish1 only
- Bristlenose pleco1 only
- Boeseman's rainbowfishup to 7
- German blue ramup to 2
- Electric yellow labup to 7 *
* Fits by volume, but the footprint is under what Seriously Fish recommends for the species.
Too big for this tank
- Discus needs a group of 6 or more, and this tank only has room for 3.
- Clown loach needs a bigger tank: the recommended minimum is a 71 x 24 in footprint.
- Oscar needs a bigger tank: the recommended minimum is a 59 x 24 in footprint.
- Common goldfish grows too big for this tank.
- Common pleco needs a bigger tank: the recommended minimum is 75 gallons.
- Bala shark needs a bigger tank: the recommended minimum is a 94 x 24 in footprint.
Gear for a 33 gallon long tank
Searches on Amazon for the right size. Check the tank size or flow rating on the listing before you buy.
As an Amazon Associate we earn from qualifying purchases. Prices and stock are Amazon’s.