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UNS 20C Ultra Clear Rimless Aquarium

UNS 20C Ultra Clear Rimless Aquarium

4.9· 254 ratings

Last price we saw

$39.99last seen Oct 29

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Our take on the UNS 20C Ultra Clear Rimless Aquarium

The UNS 20C is a 2-gallon rimless cube aquarium made of ultra-clear low-iron glass, built as a desktop tank for shrimp, snails, or a single betta. The rimless edges and clear glass are its main draw: no plastic trim, no green tint, so the contents are the display. At 2 gallons it is small even by nano standards, so it suits a planted shrimp setup more than a community of fish. It holds a 4.9 out of 5 from 254 ratings, which is strong for a bare tank where buyers judge glass quality and seams.

Best forDesktop shrimp or snail tanksPlanted nano scapesA single betta in a small footprintFirst rimless tank on a budget of space
Pros
  • Ultra-clear low-iron glass with little green tint
  • Rimless, silicone-edged cube looks clean from all sides
  • Compact footprint fits a desk or counter
  • Simple bare tank, so you choose the light, filter and heater
Cons
  • 2 gallons is too small for most fish long term
  • No lid, light, filter or heater included
  • Small water volume swings temperature and chemistry fast
  • Rimless glass edges chip if knocked

UNS 20C Ultra Clear Rimless Aquarium price history

Lowest price we've seen: $39.99 on Oct 29. Tracked across 1 store since Oct 29.

What reviewers say

Owners rate it highly, mainly for the clarity of the glass and tidy silicone work. Complaints center on the small volume and the fact that everything else must be bought separately.

Pros
  • Glass clarity and lack of green tint
  • Clean rimless seams
  • Sturdy build for its size
Cons
  • 2 gallons limits livestock options
  • No equipment included
  • Needs frequent small water changes

Specifications

Material
Glass
Shape
Cube
Tank Size
2 gallons

Questions and answers

Is 2 gallons enough for a betta?
It is the bare minimum and workable for one betta if you keep up with water changes and heating. Most keepers would go larger for a fish; shrimp and snails are a better fit.
What else do I need to buy?
A small filter, a heater if your room runs cool, a light for plants, and a lid or mesh top if you keep jumpers. The tank ships as glass only.
Is the glass really clearer than a standard tank?
Yes. Low-iron glass removes most of the green tint of regular aquarium glass, which is the main reason buyers pick this over a cheaper rimmed tank.
Can I use it without a filter?
Only for a very lightly stocked, heavily planted setup with frequent water changes. A small sponge filter is cheap and makes the tank far more stable.
How often should I change the water?
Small tanks need small, frequent changes. Plan on roughly 25 to 50 percent weekly depending on stocking.
What do buyers say about the UNS 20C Ultra Clear Rimless Aquarium?
Rated 4.9 out of 5 from 254 ratings.