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eWonLife

3.45 Gallon Betta Fish Tank, All in One Aquarium Starter Kit

  • Based on 298 reviews
Condition: Used - Very Good
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Size: 3.45 Gallon


Features

  • A Friendly Starter Kit for FishkeepingEverything you need to start a thriving aquarium is right here: a crystal-clear fish tank, a multi-stage filtration system, a heater, a LED light, a water changer, and a net. It eliminates worries about water quality, temperature, or light, making it the perfect gift for a kid, a beginner, or anyone desiring the serenity of nature without the hassle.
  • Hidden & ProtectedeWonLife small aquarium features a hidden multi-storage design that neatly tucks away all essential gear, including heaters and filters. This gives you a clutter-free view, while the 0.08"(2mm) intake slots ensure your curious fish can explore happily and fearlessly, safe from the pump
  • More Filter Media, Fewer Water ChangesAfter the initial sponge filter, we've added ceramic rings and quartz balls to create a paradise for beneficial bacteria. Think of them as a tiny, powerful cleanup crew that constantly removes invisible toxins from fish waste. This creates a clear and stable environment where your aquatic friends can thrive, and far less work for you
  • 78F Constant Temperature & Easy Readings The included heater maintains a stable 78F, mimicking native tropical waters. The thermometer easily confirms perfect conditions. Note: Keep the entire heater fully submerged to prevent burnout and short circuits
  • Compact & Crystal-Clear Desktop AquariumMade from high-clarity, durable plastic, this lightweight tank (15"L x 7.9"W x 8.3"H) fits perfectly on any desk or balcony. The 3.5 gallon swimming space is an ideal home for a Betta, small schooling fish (like Cardinal Tetra or Zebra Danios), and ornamental shrimp (such as Red Cherry or Blue Velvet)
  • Ideal Gift & One-Year WarrantyShare the joy of fish keeping. This premium fish tank kit makes an unforgettable choice for Mothers Day gifts, birthday gifts, housewarming gifts, sympathy gifts, Thanksgiving gifts, and Christmas gifts. The entire aquarium kit is backed by a one-year warranty, and our 24/7 team ensures you receive a satisfactory solution

Description

Maintaining a comfortable temperature of approximately 26°C/78°F for your beloved fish The thermometer lets you check the water temperature at a glance, giving you total peace of mind We've made routine care simple. The only regular task? Just remember to rinse the filter sponge weekly for optimal performance. This tool makes water changes easy and effectively removes debris from the aquarium floor and filtration sump Open the pump and check the impeller and shaft for debris. Clean them thoroughly to remove any blockages To prevent excessive algae growth, please avoid high-intensity lighting while maintaining daily illumination for 3-6 hours. The use of a timer for automatic control is recommended Why is my new water pump completely dead with no reaction or vibration? The internal rotor may be stuck at a "balance point". Just give it a firm shake, or remove, clean, and reinsert it to get it working perfectly! For removal, please refer to the "Water Pump Troubleshooting" video in the product description What if the pump, light, or other accessories stop working? Do I have to replace the whole tank? Not at all! We stock all individual parts. If any accessory (light, pump, heater, etc.) is defective, just let us know. We will ship a Free Replacement to you immediately. No need to return the broken part! How to use the fish tank thermometer strip? Simply peel off the backing and stick the strip to the front of your tank, below the water level. Wait 2-5 minutes, then check the color to read the exact temperature I'm worried my small fish might get stuck against the intake vents Designed for safety: The intake slots are ultra-fine (2mm / 0.08") to prevent trapping. Plus, the pump flow is adjustable—simply set it to the lowest speed to ensure a gentle environment for small fish.

Brand: eWonLife


Material: Acrylonitrile Styrene


Tank Volume: 3.5 gallons


Special Feature: Constant Temperature, Self Cleaning, Transparent


Product Dimensions: 14.96"L x 7.87"W x 8.27"H


Item Weight: 3.56 kg


Specific Uses For Product: Keeping Betta fish, Keeping Nano Fish, Keeping Shrimp


Style: Minimalist


Color: Clear


Included Components: Air Pump, Aquarium Heater, Filter, Light, Thermometer Strip


Product Dimensions ‏ : ‎ 14.96 x 7.87 x 8.27 inches; 7.85 pounds


Date First Available ‏ : ‎ January 19, 2026


Manufacturer ‏ : ‎ eWonLife


Best Sellers Rank: #10,200 in Pet Supplies (See Top 100 in Pet Supplies) #5 in Aquarium Starter Kits


#5 in Aquarium Starter Kits:


Customer Reviews: 4.0 4.0 out of 5 stars (298)


Brand Name: eWonLife


Included Components: Air Pump, Aquarium Heater, Filter, Light, Thermometer Strip


Number of Items: 1


Number of Packs: 1


Manufacturer: eWonLife


Set Name: Battery-Free Thermometer Aquarium Kit


Item Highlight: Rear Filtration, Adjustable Pump, 25W Heater, Thermometer Strip, LED Light with Timer & Water Changer Kit, Nano Fish Tank


Unit Count: 1 Count


Additional Features: Constant Temperature, Self Cleaning, Transparent


Specific Uses For Product: Keeping Betta fish, Keeping Nano Fish, Keeping Shrimp


Vivarium Type: Aquarium


Pet Type: Fish


Tank Volume: 3.5 gallons


Item Dimensions L x W x H: 14.96"L x 7.87"W x 8.27"H


Item Weight: 3.56 kg


Product Style: Minimalist


Color: Clear


Material Type: Acrylonitrile Styrene


Frequently asked questions

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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

    • SILENT PUMP! GREAT FOR BETA FISH!! COMES WITH EVERYTHING YOU NEED!
Size: 3.45 Gallon
Review Image by Crystal F.
Review Image by Crystal F.
Review Image by Crystal F.
Review Image by Crystal F.
Review Image by Crystal F.
Review Image by Crystal F.
Review Image by Crystal F.
So far so good!!!! I think this is a really good tank set up, it comes with everything that you need besides decorations, water and rocks for the bottom. I would recommend buying a thermometer so that you can keep an eye on the temperature of the tank because the heater does go into the back within the filter compartment so you’re not able to watch the light indicator on the heater. Otherwise, this is a really good tank for the price. I feel it was definitely worth it. I’m already planning on buying another one for one of my other fish to replace his current tank. The light is a USB plug so make sure that you have a USB charger box to run the light as it does not come with a charger box. Altogether the tank will take three outlet outlets to run. (Light,Pump, Heater) I am really happy with this tank. I think it looks really good. I’m not sure how well the pump and filter work as I’ve only had it set up for 24 hours and I have not yet added a fish to it, but the pump seems to work very well. There are three different types of filter media in the back for the water to go through. (ceramic rings , quartz balls , sponge filter ) Also, I think it is important to add to this review that this PUMP IS COMPLETELY SILENT! You can’t even tell that I have it turned on without looking inside & seeing the water output! Cleaning of the tank when I first got it was extremely easy as every piece comes apart! It is not as big as I had expected, but I really have come to like it because it is better for my beta fish. It’s more of a shallow tank. It is wider than it is tall, which makes it easier for my beta to reach the top to get air. I have posted a video with my review to show size comparison. My other beta tank is only 3 gallons, but it is taller. ( Tetra Color fusion starter kit 3 gallon half moon tank ) I have decided to buy another one of these 3.5 gallon tanks as I really like this one better! ... show more
Reviewed in the United States on May 28, 2026 by Crystal F.
    • Highly recommend
Size: 3.5 Gallon
Great starter tank! Perfect for my betta. Easy to set up with clear instructions. I recommend sterilizing the quartz balls and ceramic tubes in boiling water (they were pretty dusty). I love the filtration system. The controllable water outlet is a good concept — even on full flow it doesn’t overpower my betta. The filtration intake isn’t too strong for the betta, either. I wouldn’t recommend using fine sand or gravel for substrate, as it might clog the filtration inlets near the bottom. I purchased some smooth glass pebble substrate and that worked great. The pump is very quiet and the heater works great. I also like having the black back wall of the tank — it showcases my betta and all of the decorations. Some of the reviews mentioned and had pictures of a hole in the bottom of the tank with a rubber plug. I was concerned about that aspect and purchased some aquarium safe silicone to secure the plug as a contingency. Fortunately my tank did NOT have the hole/plug. This tank is excellent value for the money and I’m very pleased with the quality. ... show more
Reviewed in the United States on April 2, 2026 by Wen
    • Perfect for price and need
So easy to set up and use! Tho I did need to watch the video on how to use the gravel vac. It’s been working well for my betta, fits drift wood and a fun statute and just added some live plants. The light has multiple settings on it. The original light didn’t work but I reached out to the seller and had a new one within a week! The tank is plastic but it’s very sturdy. No issues with leaking The heater works great and maintains a constant temp of 78 degrees. I gave 4 stars because it does lose water to evaporation quite quickly (which may be normal) but as soon as the water comes down at all the pump portion gets a lot louder. But overall im happy with it. Just wish they had a 5-6 gallon version! ... show more
Reviewed in the United States on May 15, 2026 by Bri
    • Great All-in-One Tank!
Size: 3.45 Gallon
Review Image by Andrew
Review Image by Andrew
Review Image by Andrew
I’ve set up a few aquariums over the years, and this all-in-one tank has impressed me so far. It arrived very well packaged, and everything was protected properly during shipping. No scratches, cracks, or loose components. I really like the curved edges, as they give it a clean, modern look. It also improves the viewing experience compared to standard sharp-cornered tanks. It looks sleek without being overcomplicated. What really stood out to me is the heater placement. It’s positioned in an area with consistent water flow, which helps maintain a more uniform tank temperature and prevents hot spots. The filtration system is also well laid out and surprisingly quiet. I can barely hear it running. I appreciate that there’s a dedicated space for bio media, which allows beneficial bacteria to establish properly and supports a healthy nitrogen cycle. It doesn’t feel like the filtration was an afterthought. The lighting is bright and enough for this size of tank. It should work well for low- to moderate-light plants. Another feature I really like is the bottom drain. That’s a big plus if you ever need to fully drain the tank for maintenance or a reset. Overall, this feels like a well-designed tank that balances aesthetics and functionality. I’m currently in the process of cycling the tank and plan to do a follow-up review once it’s fully established long-term. So far, though, I’m very happy with it and think it’s a great buy for the price. TL;DR Pros: - Very well packaged - Modern design - Smart heater placement for even temperature - Quiet filtration with space for bio media Cons: - None observed so far (will update after longer-term use) ... show more
Reviewed in the United States on February 12, 2026 by Andrew
    • Cute tank prone to warping. Not safe for neo shrimp
Size: 3.5 Gallon
I liked how the filter and heater were hidden and non obtrusive. The filter is quiet too which is nice. But the tank design is not safe for neo shrimp, one of my dumb little buddies got himself wedged between the filter and the wall and died there. The clear plastic lid has bent dramatically in the few weeks I've owned this tank, and the plastic top to the filter never fit properly in the first place. Overall its a cute tank, but not safe for little shrimp and the plastic is prone to warping. ... show more
Reviewed in the United States on June 24, 2026 by Amy
    • Pretty, but lets the fish jump out
Size: 3.5 Gallon
Review Image by Andrew Arkusinski
Review Image by Andrew Arkusinski
Review Image by Andrew Arkusinski
Review Image by Andrew Arkusinski
I really wanted to like this Betta Fish Tank. It is pretty, fits nicely in my office, quiet, and Bluey the Betta seemed to enjoy showing off in his new home. But it has one fatal flaw that caused me to return it. The acrylic cover warps, and leaves a gap that allowed Bluey to jump out and die. You can see the details in the photos. The cover was flat when it arrived. I had a plastic film on each side that the instructions said to remove. The cover has no positive closure to keep it in place. There are cutouts for the legs of the light, and these serve to keep the cover from falling off, but it still moves a little. The cover looks like it would be thick enough to keep from warping, but it immediately started to warp under its own weight. I noticed after a week and turned it over, so the center was high, but within a week it had returned to the concave shape. You can see warping in the first photo, but it is really obvious from the second photo, which was taken from a lower angle. (No, the lid has not fallen into the tank — that upper black bar is the light, not the rim of the tank.) The minimum water level is specified to be just above the upper grill, which is where it is in the photo. Bettas do not like turbulence, so the water level must be high enough not to cause a waterfall at the filter outlet. The black plastic cover for the filtration unit came warped. I expected there to be a positive "click" to hold it in place. This is missing, so the cover does not stay in place. It should fit like shown in the last photo where I am holding it with my fingers. ... show more
Reviewed in the United States on July 26, 2026 by Andrew Arkusinski
    • Perfect little aquarium
Size: 3.5 Gallon
Review Image by Jaime Tourigny
Great little all in one tank. Ive had it set up for a couple months now and No problems. Stays clear and clean! Absolutely no noise and the filter works great! I have several guppies in it. Love love love!
Reviewed in the United States on July 30, 2026 by Jaime Tourigny
    • Meh. Can’t recommend, even for a betta or shrimp.
Size: 3.5 Gallon
Even at full speed, the pump isn’t strong enough to move debris around in the tank to enter the filter section. I filled it with gravel, and 1 piece of wood, and wasn’t impressed by how it ran with no fish for 3 weeks. I have basically abandoned it, and I need to disassemble it and toss it. I stole the filter components to alter what I’m doing in my Fluval Flex 15 gallon. ... show more
Reviewed in the United States on July 12, 2026 by Tom

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