hygger Submersible Aquarium LED Light, Full Spectrum

This light is the perfect fit for my 3.5 gal tank. It gives off lots of light, and is plenty bright enough for my plants. The 24/7 Timer is really cool and works well!

I have a Top Fin 10 gallon planted tank and had been using the strip light that comes with the tank kit. It served its purpose and my anubias and moss and bacopa did pretty ok with it. It lasted a good 4 years or so but recently half of the lights went out, so I was looking for something cheap but good to replace it. This light came up in my search and I chose it for price, the fact that it includes red and blue lights which I know are great for plant growth, and the sunrise and moonlight functions. I hope that it will make my fish more comfortable and simulate their natural environment better.

So far this light is amazing. It was easy to quickly set up and use and so far the suction cups have worked well for me. I have it suctioned to the underside of my tank lid. After playing around with the color settings and brightness levels etc, I read the instructions (which admittedly are a bit confusing, but read them over a few times and it will help) so I could set up the 24/7 option. Because I ended up setting it it at night, I pressed the 24/7 button until I reached the last option (22:00). That basically tells the timer it’s 10 pm (doesn’t need to be 10 pm, just whatever time at night you’d like the moonlight cycle to start) which begins the blue moonlights. They start off a nice bright blue and slowly fade over the course of 50 minutes until the tank is dark. I wasn’t up early enough to see the orange lights come on for sunrise, but I assume they faded in as well. It’s now almost noon and the lights are a nice bright white (with the red and blue shining as well, but they don’t affect the color of the tank). The fish have been extra active, I’m hoping they like their new lights after being in half darkness for a week. I’m going to get more plants too, so hopefully they do well with these upgraded lights. They are SO much better than the lights that came with the tank!

The brightness of the blue light is not strong, defeats the purpose!

I’ve only had these lights for about two weeks, so I can’t speak to their longevity. Hopefully they last a long time because I love these lights!

I had submersible lights in my 125 gallon tank previously. They were some Chinese off brand that simply had an on/off switch. They were a brilliant, bright white with hints of blue, and since they had a simple switch they worked with smart plugs and Alexa routines.

So that being said, the first thing to know about these is that they will not work with smart plugs. Once they lose power, they forget their settings. However I’ve found using the 24/7 timer mode to be even better. It can be a little tricky to get set because of poorly translated instructions (more on that later), but once you get it it’s easy…..and the results are quite brilliant!

In the morning, instead of my lights popping on instantly at 100% brightness (which as you can imagine is probably not the nicest way to wake up), these lights begin with a soft orange moving gradually to a brighter orange to simulate sunrise. Then it slowly becomes a dim white light which throughout the day increases in intensity. Eventually the white light begins to fade into a bright blue simulating moonlight, which then fades over time into a lighter blue then darkness. It’s a much more natural light cycle. I believe the whole cycle results in roughly 16 hours of different types of light (6AM – 10:50PM). I’m not an expert by any means, but I do not believe this extended light cycle will contribute greatly to the growth of algae because it’s not intense white light all day every day, but I could be wrong (again, it’s only been 2 weeks).

As for the intensity of the white light in particular (since that’s in use most of the day), it is satisfactory. I purchased another brand of light before these and they absolutely PALED in comparison to the old lights I was switching away from. I returned those and bought these. These are still not as bright as the old ones but they are much closer and I suspect it’s because these are more full spectrum instead of all white. But I’m obviously pleased with them, they certainly are more than good enough.

As for setting the 24/7 cycle….just ignore the directions. You’ll see a series of times annotated on the controller with an LED light next to them…they are military time so just do some googling on that if you need to (or just subtract 12!). Wait until one of these time frames and push the 24/7 button until the LED next to that time is lit. You’re not really “setting” anything….you’re telling the controller the current time and it does the rest. If you want your cycle to start or end earlier than the 6am sunrise (the default), simply lie to the controller when you set the time (ie tell it that it’s 8pm when it’s actually 7pm or 9pm to move the cycle forward or back by an hour – or more).

One final thing to note which should be obvious from the picture but I really didn’t think about it until I got them in hand…..most of the submersible LEDs I’ve had or looked at were a round tube secured in rings with suction cups. Because they were round, you could mount them anywhere in your tank (such as behind the rim) and simply rotate them to direct light where ever you want. These are, obviously, not round. So there is no rotating and they will only direct light directly up, down, or across from where you mount them. So keep this in mind when planning where your lights will be in your tank.

Long story short, I love these lights and as long as they have a decent service life, I will 100% buy again! Will come back and add photos when I grab some (if I can add them later)

UPDATE: I still love these lights, however it comes with a major caveat: I’ve already had to replace two due to water getting inside of them. I replaced the first hoping it was a fluke…. Now the same thing with another one. I love the lights enough otherwise that I WILL replace again, but this time the “submersible” lights will NOT be going in the water. I advise either keeping your water level low enough that the lights aren’t actually submerged or mounting them top of your lids. That will present it’s own problems that I have to solve because the glass reflects some of the light back into the room. But I’ll figure that out…

I abstlove this light. Works perfect for my 9 Gallon Fluval fish tank. The light that came with the tank burnt out and this one was a great replacement. Thank you so very much for this product.