3.5 Gallon Betta Fish Tank, All in One Aquarium Starter Kits with Back Filter, Adjustable Pump, 25W Heater, Thermometer Strip, LED Light with Timer & Water Changer Kit, Nano Fish Tank, AIO Aquarium
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Availability:
15 left in stock
Arrives
Sunday, May 10
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Size: 3.5 Gallon
Set name: Battery-Free Temp Aquarium Kit
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
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 Kilograms
Specific Uses For Product: Keeping Betta fish, Keeping Nano Fish, Keeping Shrimp
Style: Minimalist
Color: Clear
Included Components: Air Pump, Aquarium Heater, Aquarium Light, Fish Tank Filter, 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: #44,162 in Pet Supplies (See Top 100 in Pet Supplies) #48 in Aquarium Starter Kits
#48 in Aquarium Starter Kits:
Customer Reviews: 4.1 4.1 out of 5 stars (111)
Brand Name: eWonLife
Included Components: Air Pump, Aquarium Heater, Aquarium Light, Fish Tank Filter, Thermometer Strip
Manufacturer: eWonLife
Set Name: Battery-Free Temp Aquarium Kit
Unit Count: 1.0 Count
Material Type: Acrylonitrile Styrene
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 Kilograms
Product Style: Minimalist
Color: Clear
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Sunday, May 10
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.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
Set name: Battery-Free Temp Aquarium Kit
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)
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Reviewed in the United States on February 12, 2026 by Andrew
Tank setup was fairly easy. Light settings all work very well. The only issue was the thermometer. It filled with water, came loose internally, and can no longer be properly read.
Reviewed in the United States on January 25, 2026 by Ray V.
Honestly pretty impressed with this little tank. It’s only 3.5 gallons, so not actually big enough for any fish (especially as the swimming space is even smaller than the), but it IS a great invert tank! I needed something to culture black worms in for my community tank, and I didn’t want to just use a bucket, so I decided to use this. I added some Malaysian trumpet snails and bladder snails, and will be adding some neocardinia shrimp in a few weeks. The light is adjustable so it’s quite versatile, although I’m unsure how well the spectrum will grow plants yet. I really just have easy, low light plants in the tank though, and added catappa leaves to give it a blackwater/swamp look, so it should be ok I think. The filtration is slow but the amount of bio media in the back is way overkill for this size of tank, so I’m pretty happy about it! It’s not much to look at yet since I started with a small starter culture of works and three bladder snails, but I’m very pleased with the aesthetic! The pump was noisy for the first hour, but once it had been running a bit it quieted down nicely! The lid isn’t amazing, but it works and keeps my cats out, and I got this because it was reasonably priced for what I wanted, so it was worth it imo :)
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Reviewed in the United States on February 16, 2026 by IzzieBear
Set name: Battery-Free Temp Aquarium Kit
This tank is fantastic! Setup was a breeze, and the self-cleaning feature actually works really well. It looks sleek on my desk and my fish seems very happy in its new home. Highly recommend!
Reviewed in the United States on March 7, 2026 by Dasani
Set name: Battery-Free Temp Aquarium Kit
Perfect tank for beginners! It was easy to set up, and the instructions were clear. It comes everything you will need, like water changer! I love it, saves me time and energy to change water and clean the tank. The size is perfect for my fish, and fits nicely for my station. It feels solid and well-made, with no leaks or issues during setup. It is totally value for money.
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Reviewed in the United States on February 12, 2026 by Veronica
Set name: Battery-Free Temp Aquarium Kit
I have been keeping aquariums for a very long time so when I was looking for a betta aquarium I chose this tank because the filtration system is more than needed and a nice design. All though there is One flaw in the design, there are 3 rows of intake slats on the right side and the 3rd row is to the bottom of the tank ? To low and would be covered with gravel. Correction was a small rock wall around it preventing substrate from going in. I also do not care for the rounded corners, because the tank is so small seems to distort to much. But overall I am very happy with this set up.
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Reviewed in the United States on February 15, 2026 by Cwain
Set name: Battery-Free Temp Aquarium Kit
It’s a plastic tank, I like the back being the filter and the variable pump flow. A little nervous with the rubber stopper in the bottom of the tank but no leaks in the first two weeks. Had to get stones and other accessories but like that it included a heater and the filter medium with the plastic carriers so it can be removed and cleaned easily.
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Reviewed in the United States on March 14, 2026 by Copper Rod
DO NOT BUY If I could leave 0 stars I would. I bought my betta fish Christmas 2025 and left it in the tank they gave us at the pet store. Purchased this tank Feb 7, 2026. My betta fish died 8 days after I bought this tank. The tank did not stay clear and has been cloudy since I turned it on. I DO NOT recommend this tank for betta fish.
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Reviewed in the United States on February 15, 2026 by Anthony