hygger Aquarium Programmable LED Light, for 12~18in Long Full Spectrum Plant Fish Tank Light with LCD Setting Display, 7 Colors, Sunrise Sunset Moon and DIY Mode, for Novices Advanced Players

It makes my tank so bright and it’s good for my plants it fits great I love it

Works as advertised and it’s super bright. Replaced my extremely expensive and malfunctioning fluval plant light and lights the tank way better.

We wanted to have multiple on / off periods throughout the day, so DIY mode is the obvious choice for us. Getting this set up was rather frustrating.But first, the summary:This light will always be fully off when first plugged in or power is restored. After power on, you must set the time before doing anything useful, but program settings are retained. So you can't use this on an external timer.24 hour mode is not too complicated to set up and use. DIY mode is a bit more trouble to set up if done right, but very troublesome if you make the mistakes documented below.Manually turning on and off the light takes a lot of button mashing. After using manual mode and restoring to automatic mode, the light setting appears to be reversed from what it should be; just wait 15 minutes for it to "fade-in" to the correct on/off state.Here is what the instructions don't say:1. Standard mode will override DIY mode, turn standard mode off (both Day-L and Moon to off) before enabling DIY mode. If DIY mode is already on, you must turn DIY mode off first before you can turn off standard mode, then you can turn DIY mode back on.2. If you manually turn the light on, or off, or on then off, many times the light will not turn on automatically (or off as the case may be) when the next DIY phase starts. If you adjust the time (you can even set it back to the same time), when the time setting is saved it will reset the light setting to the current DIY phase (after a 15 minute fade-in, see below). Changing the DIY settings has the same effect as changing the clock settings.3. When lights turn on and off in DIY mode, it does so gradually over a 15 minute period. Nothing wrong with this, just not mentioned in the manual.4. Manually turning the lights on and off takes several button presses, even though I only ever want 100% full on or full off.Here are my DIY mode instructions. The individual mode instructions are no different from what is in the manual; they are just in the right sequence here to set things up for DIY mode.Buttons: Set, Up, Down, BulbTurn off standard mode first. You only have to do this once, or after a factory reset.First turn off DIY mode if it is already enabled: long press Set and Bulb until "ON" or "OFF" appears. If "ON", press "Up" and it will change to "OFF". You can then button mash "Set" through all the DIY settings, or just wait for it to time out. Now the display will show "Day-L ON Moon ON". This is the standard mode setting. If both say "OFF", standard mode is already off, you can turn DIY mode back on and ignore this section.To turn off standard mode: press "Set", Day-L will flash. Long press "Set", then use "Up" to change "ON" to "OFF". Long press "Set" again, and "Up" to change the Moon setting to "OFF". If the display says "Day-L OFF Moon OFF", standard mode is turned off.Set up DIY mode: long press "Set" and "Bulb" simultaneously until "OFF" (or ON) appears. Use "Up" to change to "ON" (unless it was already ON). Sometimes I have to repeat this sequence in order to get ON/OFF to appear, or it would disappear as soon as I press "Up". Just try again. Once set to ON, use "Set" to cycle through the settings for each phase (L1, L2, ...). First setting for each phase is the light intensity, then start time for phase (for L1 only, as for the other phases the start time is the previous phase end time), and then end time. If intensity is set to 0, then the lights will be off for that phase. L7 and L8 are blue light, all the others are white.To manually turn the light on, press "Bulb", then press "Up" several times (it always starts at 10% for me, and I can't even tell what color it is), then press "Bulb" a zillion times to get the color you want. I want white, and it comes on as red. To re-enable DIY mode, set the time (long press "Set" until hour blinks, then press "Set" 3 more times). If the light should currently be on for DIY mode, it will appear to turn off (actually it is on the lowest light brightness) and then gradually turn to the programmed brightness over the next 15 minutes. Or if the light should be off, it will immediately go to full brightness, then dim to off over the next 15 minutes. So you think it is doing opposite what it should, but 15 minutes later you see it actually did the right thing.I am happy with the amount of light this delivers, about 70% of the brightness of the well know best in class light at one third the cost. But the DIY mode and manual programming are a pain. Personally I would prefer a simpler light used with an external timer, but you may like the automatic settings this light offers.Edited to update instructions for resuming DIY mode.

The Hygger Aquarium Programmable LED Light for 48~55in Long Full Spectrum Plant Fish Tank Light has been nothing short of a revelation for my aquarium. It checks all the boxes for what I wanted in a lighting system: full spectrum, sleek design, minimal heat emission, and set-and-forget convenience. This product deserves a 5-star rating for its remarkable impact on my aquatic plants and aquarium maintenance routine.One of the standout features of this LED light is its full-spectrum illumination. It provides a balanced and natural light that has profoundly affected the health and growth of my aquatic plants. The plants thrive under this light, and their vibrant colors and increased growth are a testament to their effectiveness. This light is designed with the needs of aquatic plants in mind.The slim and streamlined design of the light is both aesthetically pleasing and practical. It doesn't overwhelm the look of my aquarium and blends seamlessly with the overall setup. The low-profile design is a bonus, allowing the light to fit perfectly on my tank without bulky attachments.Heat management is often concerned with aquarium lighting, but the Hygger LED light boasts a low heat signature. This is beneficial for the health of my aquatic life and ensures that the aquarium temperature remains stable without any undesirable fluctuations.One of the most significant advantages of this light is its programmable timer. Once set, I can practically forget about adjusting the lighting schedule. It offers hands-off convenience, which is a lifesaver for those with busy schedules. The flexibility to customize the lighting duration and intensity is a game-changer for providing the ideal conditions for my aquarium inhabitants.In conclusion, the Hygger Aquarium Programmable LED Light has exceeded my expectations. It has enhanced the quality of my aquarium significantly, promoting healthy plant growth and providing a visually stunning display. The combination of full spectrum lighting, sleek design, minimal heat, and the convenience of a programmable timer makes this product a must-have for any aquarium enthusiast. I wholeheartedly recommend it; my 5-star rating is a testament to its outstanding performance and value.

Took me a min to figure out how the 24 hour cycle work but finally figured it out