The Zoo Med 50 Gallon Lowboy is a wide, low-profile aquarium measuring approximately 48" long by 24" wide by 12" tall. It's specifically designed for reptiles, turtles, and aquatic setups where a large surface area matters more than depth. If you're looking for a tank that gives you a wide footprint with easy top-down access and excellent surface area for oxygenation, this is one of the few mass-produced options in that shape.
This guide covers everything about the Zoo Med 50 Gallon Lowboy: its exact dimensions, what it's best used for, how it compares to standard 55-gallon tanks, equipment compatibility, and what you need to set it up properly.
Zoo Med 50 Gallon Lowboy Dimensions and Specs
The Lowboy's defining characteristic is its unusual footprint. At 48" x 24" x 12", it has the same length and width as a standard 75-gallon aquarium but stands only 12 inches tall instead of the typical 20-21 inches.
That 12-inch depth changes everything about how you use the tank. You have a massive amount of surface area relative to volume, which is exactly what you want for:
- Shallow turtle tanks where turtles need to reach the surface easily
- Mud turtle and musk turtle setups where water depth is kept at 4-6 inches
- Aquatic plant displays where you want wide horizontal growth rather than vertical
- Grow-out tanks for juvenile fish or fry
- Rack systems for breeding projects where vertical stacking isn't practical
The tank holds 50 gallons when filled to the rim, but most turtle and reptile setups run it at 25-35 gallons of actual water volume.
Weight and Stand Requirements
A fully filled 50 Gallon Lowboy weighs around 500-550 pounds including water, substrate, and decorations. That's comparable to a standard 55-gallon tank at roughly the same water weight, but the load is spread across a 48" x 24" footprint rather than 48" x 13". This means you need a stand with wide support rails, not a standard narrow aquarium stand.
Many hobbyists use heavy-duty shelving units, custom-built wooden stands, or TV stand bases. Standard aquarium stands designed for 55-gallon tanks won't work because the width doesn't match. You'll need a stand at least 24 inches deep.
What the 50 Gallon Lowboy Is Best For
Turtle and Aquatic Reptile Setups
This is where the Lowboy really excels. Box turtles, painted turtles, red-eared sliders, and musk turtles all benefit from wide, shallow water that lets them move around and surface to breathe easily. The 12-inch height also makes it much simpler to install a basking platform and UVB lighting without the complicated rigging needed in a taller tank.
A common setup for two red-eared sliders: - 4-6 inches of water with a Fluval U4 submersible filter or a Cascade 700 canister filter - Basking platform (Zilla Floating Basking Platform or Penn-Plax Turtle Topper) - Reptisun 10.0 UVB bulb mounted low since the tank is shallow - Substrate of smooth river pebbles or bare bottom for easy cleaning
Shallow Aquatic Plant Tanks
Aquascapers sometimes use the Lowboy for emersed or emergent plant setups. You can grow carpeting plants like Monte Carlo or Utricularia graminifolia across a massive 48" x 24" canvas at just a few inches of water depth. This style is popular in the paludarium community.
The wide surface area also means CO2 off-gassing is faster, so if you're growing plants, you'll need a pressurized CO2 system to maintain adequate levels. Budget-friendly options include the Fluval 45g CO2 kit or the AQUATEK mini regulator with a paintball CO2 tank.
Breeding and Fry Grow-Out
Breeders use the Lowboy for projects that need lots of horizontal space. Livebearers, killifish, and small cichlids can be grown out in a wide, shallow environment. Sponge filters work well here since the low water column doesn't demand high-powered filtration.
Filtration Options for the Lowboy
Filtration for a 12-inch deep tank requires different thinking than a standard aquarium. Tall canister filters with long intake tubes won't work correctly if the water level is below 8-10 inches, which is common in turtle setups.
Best Filter Options
Submersible filters: The Fluval U2 or U4 submersible filter works well because it sits entirely underwater and doesn't depend on water column height. The U4 handles up to 70 gallons, which is appropriate for a turtle setup with high biological load.
Hang-on-back filters with short intake tubes: The AquaClear 70 or Marineland Penguin 350 can be modified with a shortened intake tube to work at 6-8 inch water depth. Cut the intake tube to length with a hacksaw.
Canister filters for deeper setups: If you're running the Lowboy at full depth for fish or planted tanks, the Fluval 307 or Eheim Classic 350 work fine. These are rated for tanks up to 70-90 gallons, appropriate for the biological load.
Turtle tanks need filtration rated for 3-4x the actual water volume because turtles produce far more waste than fish of equivalent size. A 30-gallon turtle setup needs filtration rated for at least 90-120 gallons.
Lighting for the Zoo Med 50 Gallon Lowboy
The shallow height actually makes lighting easier for reptile setups but requires more thought for planted aquariums.
Reptile Lighting
The low height means UVB bulbs can be placed closer to the basking area, improving UVB delivery without needing a high-output bulb. A Zoo Med Reptisun 10.0 T5 HO 48-inch bulb on a low-profile fixture works well. Mount it 6-8 inches above the water surface.
For heat, a standard basking spot bulb (75-100 watts) in a dome fixture positioned over the basking platform is sufficient.
Planted Tank Lighting
For planted setups, the wide 24-inch footprint requires a light that can cover the full width. Standard 48-inch fixtures designed for 10-12 inch wide tanks won't illuminate the back half of a 24-inch wide tank effectively.
The Fluval Plant 3.0 48-inch LED is one of the few fixtures with enough spread to cover a 24-inch wide tank. Alternatively, two 24-inch fixtures placed side by side along the length of the tank work well.
How the Lowboy Compares to a Standard 55-Gallon Tank
| Feature | Zoo Med 50 Gallon Lowboy | Standard 55-Gallon |
|---|---|---|
| Dimensions | 48" x 24" x 12" | 48" x 13" x 21" |
| Footprint area | 1,152 sq in | 624 sq in |
| Water height | 12" | 21" |
| Surface area | Very high | Standard |
| Access difficulty | Easy (open top) | Requires arm reach |
| Stand availability | Limited | Widely available |
| Price | $180-250 | $100-150 |
The Lowboy costs more than a standard 55, and finding the right stand is the main challenge. But for turtles and wide aquatic setups, the shape is exactly right.
For a broader look at tanks and accessories in this size range, our guide to aquarium equipment under $50 covers budget accessories that pair well with the Lowboy.
Setting Up a Basic Turtle Tank in the Zoo Med 50 Gallon Lowboy
Here's a straightforward starter setup for two adult red-eared sliders:
Equipment needed: - Zoo Med 50 Gallon Lowboy tank - Custom or repurposed stand (at least 24" deep) - Fluval U4 or Cascade 700 canister filter - Zoo Med Reptisun 5.0 or 10.0 T5 HO 48" bulb with fixture - Basking spot bulb (75-100W) with dome fixture - Penn-Plax Reptology Basking Platform or similar floating dock - Digital thermometer with dual probe (air and water) - Water conditioner (Reptisafe or Seachem Prime)
Water depth: 4-6 inches for hatchlings, up to 10 inches for adults Basking temperature: 90-95°F Water temperature: 72-76°F Ambient air temperature: 75-80°F
The wide footprint means you have plenty of room for a proper basking area, swimming space, and enrichment. This is one of the reasons the Lowboy is popular with turtle keepers who have tried keeping turtles in standard 55-gallon tanks and found them cramped.
If you want to explore filtration or other equipment for a complete aquarium setup, our best aquarium equipment guide covers top-rated options across all categories.
FAQ
Where can I buy the Zoo Med 50 Gallon Lowboy? Zoo Med sells the Lowboy through Amazon, PetSmart, Petco, and independent reptile specialty stores. Availability can be inconsistent since it's a specialty item. Checking multiple retailers or calling local reptile stores often turns up stock when online sites show it as unavailable.
What stand do I use with the 50 Gallon Lowboy? This is the biggest logistical challenge. You need a stand at least 24 inches deep. Custom-built wooden stands are the most common solution. Some hobbyists use heavy-duty metal shelving with plywood tops. Standard aquarium stands designed for 55-gallon tanks won't work due to the width difference.
Can I use the Lowboy as a freshwater fish tank? Yes, but the 12-inch depth limits what fish you can keep. Fish that prefer shallow water, like hillstream loaches, endlers, or most gouramis, work well. Deep-bodied fish or anything that needs significant swimming depth isn't a good fit.
Does the Zoo Med 50 Gallon Lowboy come with a lid? The Lowboy is typically sold as a tank only. You'll need to source a lid separately or build a custom frame with screen mesh. Zoo Med screen covers are available in 48-inch lengths, but you'll need two 24-inch ones or a custom size to cover the full 24-inch width.
Final Thoughts
The Zoo Med 50 Gallon Lowboy fills a specific need that no standard aquarium covers: maximum surface area with minimal depth. For turtle keepers especially, it's one of the best purpose-built options available. The stand situation requires some creativity, but once you solve that, the tank delivers a genuinely better environment for shallow-water species than any standard tank of similar volume. If you're building a turtle setup from scratch, this is the tank to build around.