ONF Flat Nano+ 15W Full Spectrum Aquarium Light, Up to 20 Level Dimmable APP Controlled Light, IP54 Waterproof Light, Suitable for 2-9 Gallon Rimless Fish Tanks, Terrariums, & Potted Plants, Black

The media could not be loaded. I absolutely love the ONF Flat Light! My plants were struggling before, but after switching to this light, they truly came back to life healthy, vibrant, and growing beautifully. The design is sleek and modern, and the quality of light it provides makes a noticeable difference. It’s definitely worth the investment if you care about your plants’ health and want something that looks great too!

This light is wonderful... by far one of the best lights I own .. grows plants well and has a nice clean white light to it ... its a pretty powerful little light but offers a great range on the dimming functions..if you are looking for a quality light I would in deed recommend this one

The app is limited and not very intuitive and all substantive instructions are in Chinese. I set a schedule of different light percentages at different times. Then I wanted to change the times and could only change the percentage. I tried uninstalling the app, unplugging the light for over 24 hrs (for memory to clear), all with no luck. I had to email the company. They wrote back the next day and said you have to delete the times starting at the bottom of the list before you can set new ones. And you can only get the delete to appear if you start at the bottom. You pull from the edge and delete appears, but only once that time is at the bottom of the list. So once I knew that it was easy. Light works great and I like the the way I can set many different percentages so you can simulate the natural day light. The only thing I wish is that the light itself was longer to cover move of my tank. I have the Dennerle Shrimp King 10g tank.

I love this modern LED light. The light remembers what setting you set it too so it comes back on at the same power level (25, 50, 75, or 100%) when used with a timer. Also the design is really clean and matches my tank and other gear perfectly. I'm currently using this on a ADA 45F tank.Note: this light is only compatible with rimless tanks! The clamp/mounting bracket doesn't fit with regular tanks.

Firstly the description says 20” but nothing about this light is 20”. The light bar itself is 11.5”..my fault I should have read the specs. The tank attachment relies on metal screws that don’t even have protectors so it can scratch your tank. The app is awful and the colors are not adjustable. It looks nice, has a nice light, and was beautifully packaged, but I’d just go with the Fluval 3.0 which is way better, and you get MUCH more for the money. This item is way over priced.

This light is certainly a bit pricey. However, after 5 years, I can confirm it's well worth the cost.The color of the light is much better than cheaper alternatives. It is similar to real sunlight, which makes colors really pop. I've attached some photos to help illustrate this.Also, they have been extremely reliable. I purchased 12 of these back in 2019, for a variety of nano-tanks and plants. They have been running 5-8 hours per day, every single day for the past 5 years, typically on brightness level 2 or 3 (out of 4). So far, not a single lamp has failed.

I purchased this light to use on my 6 gallon betta tank. Compared to my Twinstar 450S on the tank next to it, it's significantly dimmer and cooler. It's probably plenty of light for the 6 gallon tank but I wouldn't use it on anything larger than 10 gallons. I don't like the color rendition nearly as much as with the Twinstar, which was comparable in price.The ONS does give you app control whereas the Twinstar does not, and you must purchase a dimmer separately for the Twinstar. Point ONS.I'm not very impressed with the build quality. It's plasticky and there is a lot of play in the mounting bracket. This means you'll have to skew the bracket by 5-10 degrees in order for the light to be parallel to the water surface.edited 11/28/22 - still not terribly impressed with this light. The app is beyond useless. Once you set it up, there doesn't seem to be any way to edit time of day the light increases or decreases intensity. The help option in the app takes you to an ONF webpage that doesn't exist. In hindsight, I wouldn't have purchased this light. Dropping to one star because of how awful the app is.

Put this on a 5 gallon planted tank. Too much power. Excellent light.