hygger9W Full Spectrum Aquarium Light with Aluminum Alloy Shell Extendable Brackets, White Blue Red LEDs, External Controller, for Freshwater Fish Tank (12-18 inch)

Star ratings explained:BRIGHTNESS FUNCTION - five stars because it is bright! Very bright!TIMER FUNCTION - ZERO STARS Whats to rate???? It's a OFF timer like the Sleep function on your TV in 1972. Not a feature to brag about man, more like pimple your trying to hide. Heres the feature: You can turn it OFF in 3 hours, you can turn it OFF in 6 hours, and wait for it......you can turn it off in yes.....12 friggin hours. NICE. Oh yeah AND you can turn it OFF in NOT NEVER! hours. so.....friggin.....cool...........I Wanna do it again tomorrow, yup, press the stupid button again for 3,6,or 12. not programmable captain.WATER RESISTANCE - ZERO STARS - Its going to be around water, near water or within inches of water right? I dont want water resistance, I want water proof. Its not. I sealed mine up with aquarium silicone around the edges for my case only. I broke the rules. No tank lid and it's extended like a ballerina on a tight rope, because my tank is a too long for the size i got. My junk is hanging by metal wires one inch above certain electrfying death. The longer one is too long and that is just plain ugly. I don't buy ugly on purpose. Aesthetics over safety? in this case yes. My bad.One year of ownership and now I write my review of this light. Why? I thought to myself, this is a good time to write the best review because I have used it, abused it, dropped it on the floor, dropped it in the tank (oops), and it has gone on and off and on and off and on and off over 365 times now!What I liked.• Durabilityo I dropped it on the flooro I dropped it in water while lito It has turned on and off over 365 times already and still works like new• Two sets of bracketso Plastic ones for smaller tankso Metal wire ones for extending it to larger tankso I needed the metal wire ones.~ They are stiff and solid.~ I still used some aquarium silicone to hold the adjustment in place• Brightnesso No scientific way to measure in my house, but to my eyes, they are bright!o I’ve grown plants for 6 months now, no issues, but I inject CO2 and fertilize alsoo The description of brightness in their ad. See below for what I don’t like.What I don’t like• Brightness description on the Amazon pageo Now the description says adjustable brightness and to combine the timer function to simulate day to night. Not what you think. Its an off timer. That’s it. An OFF timer. Nothing more. Not an ON timer. Not programmable. No memory. It won’t turn on in the morning and simulate night to day. You have to do that , just sit there for two hours and press the little button every 20 minutes and just sit there. And wait for 20 minutes. Make it brighter Mr. Sun, go ahead.. NOT. Get the point. Its marketing propaganda. But not a deal breaker. Just buy a programmable dimmer/timer if you want that fancy stuff. I bought one today, review coming soon.• Dimmer/timer.o Again, Its not programmable, so its just an off timer. 3 hours, 6 hours or 12 hours. What if I want 10 hours, if its what I need. It’s useless so I don’t use it. I have a WI fi plug connected to it set to come on at 9 am and turn off at 7PM, 10 hours. That cost me 4 dollars. Well worth it, but that is another review.o No memory recall after power loss and default is WHITE ON 100% | RED/BLUE ON 100%o Due to above wifi plug I use, it loses memory every night because I cut power to it. So the fish are awaken every morning by the GREAT GOD of SUNLIGHT shining through their little a*** at the peak of dawn!!!! This is an economical light, so I didn’t expect it to have a fully programmable EPROM chip installed with full dimmable capabilities at this price point. Not a negative.This product is 100% recommended for a cheap, well built, long lasting, bright LED, slim, sturdy, strong and sleek designed LED lighting fixture for your aquarium, planted or not planted. Buy it if you want all that!Thanks for reading.Ray

I bought this light after a careful comparison with similar products. This item was just a few dollars more than similar products, but the alloy material that houses the light is much better than plastic used by others because it dissipates heat faster. Thus, as with many electronics producing heat, the cooler it operates, the better. In part because cooler operating temperatures will increase the lifespan of the product. And so that was a major selling point to me and well worth the few dollars extra that I paid. Another major factor is the timer, works fine, it's there if I need it, but for now, I just prefer to turn it on and off when I feel like it. The other big consideration is the fact that it is a full spectrum light, so I can use it for live plants and contributes to overall health and vigor of my fish. The all white and full spectrum modes make my fish and tank look beautiful! The other option, red and blue LEDs, (looks more red than blue) looks ok, but I haven't used it much. One of the coolest features about this product to me is that you can adjust the brightness levels/light output. Also, unlike some other options I had, this product will withstand some immediate, let's say accidental exposure to water, but of course, is not designed to be submerged very long.It is, obviously, designed to be used in a moist environment. Overall, I highly recommend this product.

Exactly what I was looking for. The settings are numerous and bright. I use the lowest setting and my plants are thriving. My one complaint is the timer function seems... weird. I haven't read the instruction pamphlet to see if it is supposed to do this, but it seems to change the light from setting to setting while on timer. I noticed several times that the light was barely even on and since I wasn't sure what was going on I decided to not use the timer function. But it could be that it is supposed to do that, I'm not sure. (Going to try this again next time I'm around the house for a day). In any event, it works perfectly when I turn it on and off manually. The reviews that talk about water resistance being a problem seem to me like they must have submerged the thing accidentally or something. Esp the one where the dude is pouring water out of it (also that water looks pretty scummy so how well is that guy taking care of anything?). I mean maybe if you don't have a glass top or something on there and there is a lot of surface splash from your power filter. But wtf don't you have a top on there? That will be one contaminated tank from dust, smoke, vapors from cooking, etc. Your tank's water is picking all of that up from gas exchange with the air. This light seems decently built and I feel pretty confident it will last a good long while on top of a covered tank.

Bought this light because my old light was way too strong and wasn't adjustable, which was giving me some real algae problems. The color of this light is much nicer and it's not hard to find a brightness level that makes my aquarium look much nicer than before. My only complaint is that the brightness setting does not hold if you use a timed outlet so I've had to use the timer built into the light which is a bit of a pain. I've also noticed that using the built in timer that the light does not turn off but goes into a dim night mode instead. Still this light (along with a couple of snails) has allowed me to bring the algae under control. Considering the lower price point of this light, the timer limitations are very minor

Old one finally died. Bought this one and it’s nice and bright. I think the fish like it. They seem to come out more.

I am in LOVE!!!! With this light! I love how bright it is, how many different settings there are, it is super easy to setup as well. I am buying a second one for my other tank! My tank in the photo is a 2.5 gallon rimless.