Koller Products AquaView 3.5-Gallon Aquarium with Crystal-Clear Viewing Window

Randy Mead: Was disappointed from the first day with the flimsy tank. Also it didn’t hold 31/2 gallons of water as advertised but thought I’d make do. The pump was the worst! Cheap and not very powerful, hardly pumped water. It was extremely weak. There’s not enough tubing to reach the bottom of the tank so fish can get sucked up into the pump. The clip at the top is so flimsy it bends and doesn’t stay so the pump falls into the tank. Called Koller on the first day to get advice or ask where I could buy a new pump that would fit on the particular tank I purchased. Operators took my info but NO CALLS BACK TO ME! Called 3 more times in a month and a half and NO RETURN CALLS! That told me all I needed to know about Koller products!! Last straw, changed the water regularly with proper fresh water and after a month cleaned the tank etc and put it back together and the pump won’t filter. It’s on alright, but the water won’t flow up and over the top. That’s when I made my last phone call to them trying to even simply buy a new and better filter from them. No Response from Koller!!!!! I strongly recommend NOT purchasing from Koller and I never will again!! Their...

United States on Apr 17, 2023

Ashe BoydAshe Boyd: This is the perfect size for a betta to have enough space to thrive.

I will say that the other reviews are correct- the lid doesn't fit at ALL, especially if you have a heater in the tank as well, but honestly it doesn't seem to matter too much.

It's very clear and very easy to lift and clean. The filter is definitely not silent, but I can't hear it over my fan and I think if you expect it to be silent, you're asking too much.

All in all, the price was fair and delivery was VERY fast, so I' happy with my purchase. Akaza loves it! My litte guy seems happy with his new space.

United States on Mar 15, 2023

M Powers: Absolutely perfect tank. Perfect size for my Beta Oliver to have an awesome life. Highly recommend the tank. The light didn't work - however I wrote the company (better than calling 72 hrs for return calls) gave the information and they are sending a new light. (Had a short in it) So not only is this a great tank, great price etc - they stand behind their products. NO hesitation on buying again or giving as a gift!!!

United States on Feb 17, 2022

Genghis GreenGenghis Green: I love this little aquarium. The filter system is a bit hanky but works. I added a bubble curtain for air. But over all for the money, it is great. The led works great and has many, many settings. I recommend this.
The only issue is I slightly cracked the back when cleaning the surface. If you push outward on back from inside, it can crack and destroy it.

United States on Apr 10, 2021

Rachel: Great! Son loves it. One thing, as mentioned by another reviewer, I believe, the foam part in the filter has to be changed about once a month, and they are not cheap! Look into the cost of getting the filter before buying this if you are concerned about costs involved.

Canada on Aug 20, 2017

GAIL FUNK: Great little tank. I would definitely suggest this for beginners for a couple guppies or perfect for a beta It comes with samples of products and a pretty good filter.

Canada on Aug 16, 2017

ssmontgo: So, everything was more or less perfect for less than a week. When it arrived, it was slightly scratched, but not enough to be noticeable or worth returned. Set up the tank and everything seemed great, until the pump stopped working. Now my poor fish has to filter or pump and I am hoping I can get a new one sent as I can't return the tank as it's now fully set up and occupied by a happy beta fish. Not impressed with the quality of the pump.

Canada on May 03, 2017

Amazon Customer: loved it

Canada on Jan 03, 2017

April Fletcher: It is a great tank but BEWARE of trying to find replacement filters. Not so easy. I may up buying new pump to make this problem a non issue. My Betta fish is very happy in his new home, blowing bubbles like a good fish.

Canada on Nov 24, 2014

Lady D: This aquarium turned out to be perfect for me, and I am not an easy sell! I bought my first fish ever at a 99 cents store - musing that they even sold such a thing. But my fish is a beautiful sapphire blue betta or fighting siamese fish. So what started out as a dollar investment, grew into purchasing this item, because I quickly learned that the little bowl he was in just wasn't big enough.

So for a starter aquarium, it really eased my anxiety about getting what was needed without a bunch of fuss. I am busy and don't need anything complex to maintain. This is great for the price and easy to deal with.

I would have given this item 5 stars but the design is a bit flawed when it comes to the top and how it fits over the filter. I had to pry what looks like a square cut out piece open so that the top could somewhat lay on top of the filter as it rests over the tank. I expected it to fit properly and lay flat, especially since it came together.

That said, my betta loves his new space. I regularly rinse the filter pad out, so the water stays nice and clean for him. At first, the filter scared him, which was going to result in 3 stars, but...

United States on Oct 01, 2013