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SubstrateSource 20 Gallon Glass Aquarium - 24 x 12.5 x 17.25 in - Large Clear Rectangular Rimmed Freshwater/Saltwater Fish Tank for Betta, Goldfish, Guppy, Shrimp for Home or Office Aquascaping

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$99.99 Why this price?
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Availability: In Stock.
Fulfilled by SubstrateSource

Arrives May 1 – May 3
Order within 6 hours and 11 minutes
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Features

  • Spacious Design: The SubstrateSource 20-gallon glass aquarium measures 24 x 12.5 x 17.25 in, providing ample large interior space for fish to swim and plants to flourish, while remaining compact enough to fit comfortably in home or office settings.
  • Durable Construction: Crafted from thick, clear glass panels and sealed with aquarium-grade silicone, this glass tank is reinforced with a sleek black rim, combining structural strength with clear visibility and a clean, modern look.
  • Rectangular Layout for Aquascaping: The tanks rectangular footprint provides unobstructed space for creative hardscape and plant arrangements, accommodating both starter setups and more intricate aquascapes.
  • Equipment-Friendly Rim: The black plastic rim accommodates a variety of lids, lighting systems, and filters, providing practical options for fishkeeping projects or dedicated betta, guppy, goldfish setups, as well as small-scale brackish or shrimp aquariums.
  • Flexible Setup: Its manageable size and simple layout make this aquarium tank approachable for those new to fishkeeping or aquascaping, while still providing flexibility for more experienced hobbyists to create detailed setups.

Description

The SubstrateSource 20 Gallon Glass Aquarium measures 24 x 12.5 x 17.25 in / 60.9 x 31.75 x 43.81 cm, offering a spacious rectangular tank for fish, plants, corals, and aquatic decor, while maintaining a compact footprint that fits comfortably in office, or home settings. Designed by SubstrateSource, a brand dedicated to thoughtful aquarium solutions, this tank reflects the company’s focus on providing versatile and approachable products for both new and experienced hobbyists. Crafted from clear glass panels and sealed with aquarium-grade silicone, the aquarium is reinforced with a black rim that accommodates a variety of lids, lighting systems, and filtration equipment, giving aquarists the flexibility to customize their setup. The rectangular layout provides unobstructed interior space, supporting both simple starter arrangements and more detailed aquascapes, making it suitable for betta, guppy, goldfish, shrimp, community freshwater tanks, or even small-scale saltwater and brackish projects. SubstrateSource emphasizes functional, user- friendly aquariums that balance durability with clean presentation. This 20-gallon tank offers generous viewing angles, allowing hobbyists to observe fish activity, coral placement, plant growth, and hardscape arrangements with clarity. Its strong construction, balanced dimensions, and flexible layout make it a solid foundation for aquarists planning freshwater aquascapes, brackish habitats, or compact reef-style displays. Whether chosen for beginners starting their first tank or advanced hobbyists building intricate environments, the SubstrateSource 20 Gallon Glass Aquarium provides a practical and adaptable option for a wide variety of aquatic setups.

Brand: SubstrateSource


Material: Glass


Tank Volume: 20 Gallons


Special Feature: Rimmed, Transparent


Product Dimensions: 24"L x 12.5"W x 17.25"H


Shape: Rectangular


Specific Uses For Product: Indoor, Freshwater Aquarium for Fish and Plants


Style: Modern, Custom


Included Components: 1x 24x12.5x17.25 Aquarium


Vivarium Type: Aquarium


Product Dimensions ‏ : ‎ 24 x 12.5 x 17.25 inches


Item model number ‏ : ‎ GRA20G


Date First Available ‏ : ‎ September 9, 2025


Manufacturer ‏ : ‎ SubstrateSource


Best Sellers Rank: #35,146 in Pet Supplies (See Top 100 in Pet Supplies) #42 in Aquariums


#42 in Aquariums:


Customer Reviews: 4.3 4.3 out of 5 stars (16)


Brand Name: SubstrateSource


Included Components: 1x 24x12.5x17.25 Aquarium


Model Number: GRA20G


Manufacturer: SubstrateSource


Unit Count: 1 Count


Material Type: Glass


Tank Volume: 20 Gallons


Item Dimensions L x W x H: 24"L x 12.5"W x 17.25"H


Item Shape: Rectangular


Product Style: Modern, Custom


Additional Features: Rimmed, Transparent


Specific Uses For Product: Indoor, Freshwater Aquarium for Fish and Plants


Vivarium Type: Aquarium


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: May 1 – May 3

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews


  • Fish can’t swim in an empty tank
It came empty. I had to buy water.
Reviewed in the United States on March 28, 2026 by Amazon Customer

  • Fish tank
Product was as described
Reviewed in the United States on March 9, 2026 by cynthiapingley

  • Great tank fair price
It's a 20 gallon tank not much to say. Arrived in perfect condition used for peludarium it's holding the rocks and all.
Reviewed in the United States on December 10, 2025 by Tricia Wieczorek

  • A solid 20g tsnk
They ship with fed ex so it was damage free
Reviewed in the United States on February 11, 2026 by TE Lundquist

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