Koller Products 2-Gallon Fish Bowl, Impact- Resistant Plastic Betta Fish Tank with LED Lighting (7 Color Selections), Buit-in Timer, Crystal-Clear Clarity, Desktop Aquarium Tank for Home Décor

I have kept various kinds of fish for about 50 years now and have several tanks, ranging from 55 gallons all the way down to this great little globe, which I love. Only recently, while searching the Internet for some smaller nanotanks, I've seen some of the online commentary regarding bowls such as this. I was startled to see that many folks believe they're death traps, but the truth is that any tank, big or small, can be a death trap if you are not attentive to it.I set this one up with a small-sized Lee's round undergravel filter. I could have used an extra-small sponge filter such as a Small World filter instead (and probably should have, as those are easier to maintain.) The gravel I used was from one of my well-aged, cycled tanks, so the beneficial bacteria on which aquarium filtration depends was automatically introduced into the globe. The undergravel filter is powered by a $5.00 non-UL Whisper 10-gallon air pump, dialed back a bit with the included valve. The light hood cover of this bowl features a slot for airlines or heater cords, so it is designed for these accessories-- a big plus! The cover measures about 5-3/4" inches across, so will fit other, larger globes as well. I powered the lights with a mini-USB cable left over from an old cell phone.I always use a combination of living and plastic plants in my tanks. Live plants are a very important aspect of tank filtration, especially in tanks this small. They help consume the nitrates which the bacteria leave behind. This tank has Marimo moss, hornwort and baby tears. All three are doing well with the included light. I also found a nice fallen log decoration here on Amazon which is slightly curved and fits perfectly against the curved side of the bowl to make a lovely cave.To help cycle the bowl further, I then introduced a very, very, VERY small GOLDFISH. Yep, a goldfish! This is one from a brood of feeders I hatched recently. He was not even an inch long at the time and was a perfect fit for the globe. He lived in this tank happily, with no apparent stress, for several weeks, and then I put him in my goldfish pond where he is still living-- and growing bigger. I understand this method of tank cycling is now considered old school, but it has always worked for me.Finally, after all that, I introduced my fancy floofy halfmoon betta into the bowl. He is active and thriving there. He has plenty of room to swim, spaces to hide, and structures to explore. The bowl is on my computer desk right at my elbow, so I interact with him a lot. This lets me keep a close eye on him and the water quality.So far I have had zero problems with this fish bowl or its lights. The plastic (I hesitate to call it 'acrylic') is thin but very clear, with some small imperfections which don't bother me but could irritate folks used to the polished perfection of large acrylic tanks. The multi-colored lights are beautiful and even adequate to grow low-light plants. The lid has a cutout for heater cords and airline tubing. Overall this is a wonderful nano-tank.This one gallon bowl works perfectly for a betta and some small snails, such as the two ram's horns I have in with mine. Many different kinds of nanofish fry, such as guppy fry, would also find this bowl an excellent home, as would a few cherry shrimp. A tiny baby goldfish can be kept in here for a little while as I did, but not permanently. With all aquariums, it's important to do a partial water change once a week.Bottom line-- add a filter and don't overstock, and this little nano-bowl will work fine and really look beautiful.

My Beta (or should I say the Cat’s beta) loves it! It has gotten too hot already for Tucker to go hang out on the patio… so to keep his curiosity at bay, he now has a Beta fish! He loves his fish and this bowl is perfect! Now my problem is I can’t stop buying decorations … for next water change! Hahaha! He lays on the floor and watches this fish, he walks around the coffee table and “exercises him.” They sure keep me entertained (and broke!) He can’t get to the fish and the fish has hiding places so alls well! There were still lots of air bubbles in the water in the last pic. I had sand in there for gravel. BIG mistake. Don’t do it. As soon as I deconstructed it and put some gravel in it’s now clear as it can be. 👍

At first I loved the product look. I put it together and realized the top isn’t secure with a locking mechanism to keep the top sturdy. And a week after use the light completely STOPPED working. I thought it needed to be charged however it wasn’t the case. The light doesn’t stay on!

Now you need to know that I did read the reviews and bought it anyway. Guess what? The reviews were right. Within two days the light went bonkers on me. You can turn it back on and get MAYBE 15 minutes before it goes out again. The little bowl works great for me but don’t expect the light to work

The aquariums (I bought 2 of them) are just the right size and shape for my application ("robot" fish that would get caught in corners of a square or rectangle tank (or any other shape that has corners).However, one of the two led light components had bad wiring from the battery holder. As it turned out, the power adapter from my previous aquariums fit the jack on the new aquarium lighting components so I am able to use both of the units (I am, in fact, happier using the power adapter rather than having to change batteries periodically).UPDATE:After one week of use, the aquarium that originally worked on both batteries and adapter power, stopped working on adapter power (it wasn't a problem with the adapter as that adapter works with other devices). So now I have to power one by adapter because it won't work on batteries and the other on batteries because it won't work on adapter power.

Nice tank and fits nicely in my office. I had to find an air filter that would stick to the bottom though, but it works nicely.

Great size for a betta fish. Easy set up. Looks nice

Please read reviews before purchasing and do not believe what is in the product description. This product does not come with a timer. The light that they send is different than what is advertised. There is not a switch between the bulbs to set for desired time. It also does not arrive with any directions. You have to play with it to figure out that the only way to keep the lights on is by supplying your own cord. The cord needed is an older style that not many people have any more.The tank itself is as shown but beware it is thin plastic, about the consistency of a milk jug, so if you try to move it when full of water you can easily push in the sides. It is not solid.

Cute fishbowl. Was dented. A cluster of 3 dents in one spot and one big one on another spot. Was an Xmas gift for my toddler or I would've tried exchanging it, but there was not enough time. Batteries do NOT last long on the light. Lights weren't in use until Christmas day and I have changed them twice already. (Brand new Duracell batteries each time) I was hoping in time the dents would pop back out after sitting full of water, but no such luck.

Se ve muy linda la pecera ideal para niños porque es de acrílico y no se opaca

Muy buena

Came with nothing. Not as advertised. Total waste of money.

Muy bonita. Lo único negativo que le encuentro es que el eliminador para corriente electrica lo tienes que comprar por separado. Usarla con pilas no es una buena opción.