40 Gallon Breeder tank dimensions
40 Gallon Breeder tank dimensions are 91.4 × 45.7 × 40.6 cm (36 × 18 × 16 in). The tank is rated at 151 L (40 gal). Its footprint is 91.4 × 45.7 cm and the water stands about 34.6 cm deep once a 6 cm substrate layer is in — key measurements for choosing plants and livestock.
Calculate tank volume before buying materials.
At a glance
| Size | 91.4 × 45.7 × 40.6 cm (36 × 18 × 16 in) |
|---|---|
| Volume | 151 L (40 gal), as sold |
| Water after substrate | About 133 L (35 gal) with a 6 cm substrate layer |
| Footprint | 91.4 × 45.7 cm (36 × 18 in) |
| Water depth | 34.6 cm (13.6 in) |
| Substrate needed | About 25 L for a 6 cm layer |
Before it goes in
- 40 Gallon Breeder is 91.4 × 45.7 × 40.6 cm (36 × 18 × 16 in) — rated at 151 L (40 gal), and roughly 133 L (35 gal) of actual water once a 6 cm substrate layer and the hardscape are in.
- That layer takes about 25 L of substrate, which is what you order by.
- 135 of the 160 animals in this library list a minimum tank at or under 151 L (40 gal). The biggest of them that still fit are Peacock Eel and Angelfish. Electric Yellow Lab and Siamese Algae Eater need more than this.
- The water sits about 34.6 cm (13.6 in) deep over the substrate. Plants that get taller than that — Hygrophila corymbosa 'Siamensis' and Water Sprite — reach the surface and start growing along it, which is a look you either want or trim.
- Its footprint is 91.4 × 45.7 cm, and that is the area a carpet has to cover — the number that decides how many pots you buy, not the volume.
40 Gallon Breeder tank dimensions: care and setup
What are the 40 Gallon Breeder tank dimensions?
40 Gallon Breeder tank dimensions are 91.4 × 45.7 × 40.6 cm (36 × 18 × 16 in).
How much water does it hold?
It is sold as 151 L (40 gal), and roughly 133 L (35 gal) of actual water once the substrate is in. Stocking works off the second number; minimum-tank-size advice works off the first.
How much substrate does it take?
About 25 L for a 6 cm layer.
What fits in it?
135 of the 160 animals in this library list a minimum tank at or under its volume, and the water depth of about 34.6 cm sets which plants can grow without reaching the surface.
What fits in it
- Animals this size will hold: Peacock Eel, Goldfish, Angelfish, Electric Blue Acara and Pearl Gourami.
- Plants that stay under its water line: Anubias nana 'Petite', Cryptocoryne wendtii, Dwarf Hairgrass Mini and Frogbit.
Often compared with
| 40 Gallon Breeder | 75P | Juwel Rio 125 | |
|---|---|---|---|
| Size | 91.4 × 45.7 × 40.6 cm | 75 × 45 × 45 cm | 81 × 36 × 50 cm |
| Volume | 151 L | 152 L | 125 L |
| Footprint | 91.4 × 45.7 cm | 75 × 45 cm | 81 × 36 cm |
| Water depth | 34.6 cm | 39 cm | 44 cm |