Let me start off with it worked perfectly and is easy to use! The timer system is easy to use and set it up in minutes after opening my package. There is just the PERFECT brightness so it is effective and doesn't hurt your eyes. If my friend asked me for recommendations I would send the link for this product. 10/10

Fits perfectly on the 36 inch top of my 50 gallon acrylic. Light is VERY bright, programmable, has amazing color features. My plants immediately started growing and getting bigger. It's also very sleek and not too big. Perfect for your aquarium.

This light works perfectly for my 10 gallon. It's so easy to set the timer, and it's always consistent around the clock. One of my favorite features is the gradual fade in and out of the lights; the lights don't abruptly switch on at the exact minute you set them to and actually turn up a little bit at a time. This is great for my betta, since they don't adjust to sudden changes in lighting as well as other species, and can get damaged eyes if dazzled.
You can also change the color! I set my full spectrum for a daylight cycle, then do a little 50% B + G action for the first few hours of the night. It switches all on its own and I barely give a thought to the lighting unless I'm shuffling some plants around.
I've used this light for months now and haven't had a single issue with it. Even when our power went out during storms, my time settings were saved and I only needed to adjust the clock.
Highly recommend this bad boy if you want a full spectrum sunlight type of thing for your plants + don't want to hassle with an obnoxious LED fixture. Definitely a great deal for the price. Just be careful how you scape with plants that prefer more of a dim atmosphere, like them java ferns, because the light is pretty powerful and can scorch them. Other than that, this thing is great 👠you should get one

I bought a random tank with cool blue led lights, glowing gravel, and with neon plastic plants. Only thing is, the fish freaked out with blue light - not to mention the shock of the light being super bright when it turned on. When I removed the old tank leds, it read, "Danger: Do Not Look at Lights When On." It was pretty bright.

So this is very simple to use, and eases into brightness settings, which is AWESOME. It's kinda clunky, but I got it after playing around for 10 minutes. Before I go into the how to, know that it is indeed waterproof, super bright, and brightness can be adjusted; I'm still playing with between 50-80%. The fade in/out happens during time periods you specify.

There are 3 modes. Think of them like this. Sunrise to a few hours before sunset (51), Sun has already started to Set to night (52), and full custom (53). Fortunately I only needed 2 modes. Whilst you can set modes 51 and 52 to overlap, it's causes mode 52 to kinda not work right.

For me, I needed to use two modes. Some people may just need one, depending on where the tank is located. I need mode 51, as turning on the lights in the house caused the fish to freak out in the morning. I needed mode 52 because the room where the tank is located has blackout curtains, which will block the natural light if left closed.

For me, I have mode 51 go from 6am to 3pm. What happens is, the white lights go from 0 to 70% from 6 to 615. Then stay at 70% till about 245, then from 245 to 3pm white light goes off.
Mode 52 starts at 4pm and goes to 9pm. Red/Orange lights brighten from 4 to 415, then start to dim at 845, with off by 9pm.

Mode 51: Day Time. This is your basic "white" light settings. Think Sunrise to a few hours before sunset - the sun is still up.
4 Options. 1) On/Off ( as in used or not used ). 2) On Time. 3) Off Time. 4) Brightness.
Cool thing: I set the on time to 12:00 and off time to 12:03 with brightness set to 100%. From 12:00 to 12:02 it went from 0 to 100% brightness, and from 12:02 to 12:03 it went from 100% brightness back to Zero. It seems to take 10-15 minutes to go from Zero to the brightness level you selected; a gradual wake up. Naturally, if you set the on and off time to less than 10 minutes, it turns on at 00, peaks in the middle, and goes off by your end time. It will go from Your Selected Brightness level, down to 0/off in the last 10-15 minutes.

Mode 52: This is for dusk colors. Same 4 options as mode 51. The difference is the brightness. Here you can set Red, Green, and Blue (RGB) colors, only up to 50% brightness. There are options for R + G, G + B, Just G, etc. From testing my fish do not like this blue either, even at 25%. My fish were okay with green/yellow, but ultimately I settled on just Red, as the fishies were cool with it.

Actually setting it. You Tap the "M" button to cycle through 51, 52, 53, back to clock. When you're at 51-53, you can long press the "M" and that option will start to blink. Use the up/down arrows to change options, Tap "m" to move to the next option. Upon reaching the last part of the option, you're basically back at tapping "m" sequence.

Overall I would give this 4.75 stars and not 5. The missing quarter star is for the 51, 52, 53. It could read, Day, Nite, & Cust. However, I only plan on setting this once, and plan on having this thing go for years between settings. It's not enough to remove a full star.

First thing I do not like the timer and it being so complicated to setup. Why not just a simple day timer with EZ instructions on how to set it up??? You know like it comes on at 9:00 am and goes off at 9:00 pm?? That's the simple I seek!!! It must not be complicated enough. Anyway I have my light mounted on an "Adjustable Holder Bracket" built by Driamor so I can get some more altitude between that light and the surface of the aquarium. Anytime I purchase a new light I'm buying one of these "Adjustable Holder Brackets" from Driamor for it as they really add a lot in how you want to adjust your light. But this light does grow plants very well and it's very adjustable but complicated if you like to play with such things. But for the money it's an excellent high quality aquarium light...