I have been using these for 2 years. Both LPS and SPS grow well under this light. This product is well made. It has a good form factor, great configurability, and an affordable price. I also have the G3 version of this light for my other smaller tank. It offers similar excellent qualities at a smaller size. Both G5 and G3 are great reef lights, especially for reefers who are price conscious. Highly recommended.

This light exceeded our expectations especially given the price point. We are extremely happy with it.

I've been running a Nicrew 100w on my 20g (I converted to an AIO) for about 1 1/2 years. I needed about 25" of coverage, not the full 30" as I used 5" on one side for my overflow and return chambers. Depth isn't a concern. Although I really like the Nicrew's spectrum with respect to coral color pop and being able to control the whites and blues independently (meaning a separate ramp up/down for each using the optional $50 controller), I didn't feel like I was getting the right coverage and my corals didn't seem to be doing well. I ended up supplementing with a 24" 2 bulb T5 which did seem to help quite a bit. I also added separate moonlights with one of those 14" flexible wands. So 3 lights for a 20g - seemed like overkill. So, I was torn between replacing it with the 150w Nicrew (which should provide the coverage I needed) or the SmatFarm.I saw a couple of tanks with lights like these on it and really wanted to give one a try, so I pulled the trigger on this one and just replaced my setup the other day. So far, I'm really happy with the decision. There are a few improvements that could be made that would give it 5 stars across the board for me.Pros:1) Shimmer. This is something I've always wanted on my reef tank, but was never willing to pay the high price of the Kessil or hang a MH light over the tank. The Nicrew didn't have a shimmer but this one does and it looks amazing.2) Spread. This has a much larger spread at the same height, but the mounting arm allows me to go even higher than the Nicrew. I have it maxed on height, which I probably don't need, so I may lower it just a bit.3) Controls. The menu does take a little to get used to, but after fiddling with it I really like it. You basically have ways to control the sunrise (how long), sunset (how long), moonlights (how long), and then you program the sunlight and moonlight spectrum color mix and intensity settings and it ramps up and down for you. It also comes with a remote but I haven't really used it yet - not sure if it's useful or not. The screen is super-clear high definition (OLED), but the buttons are very sensitive. It also has a very cool and useful 'test' feature of your program in fast motion so you can see what your entire schedule will look like in about a minute's time.4) Spectrum control. You can control 6 spectrums independently - 2 different blues, purple, green, cool white and warm white. Surprirsed there isn't a red option vs the green.5) Quiet. I don't even hear this thing running.6) Size factor. It's very compact and easy to work with, and solid.Cons:1) Mounting. It would be nice if it allowed you to bring the light a bit further backwards - meaning closer to the arm. For my 20g it sits a couple of inches closer to the front of the tank than I would like. You could, if you really wanted to, just use one screw and bring it back more, but it would angle forward which I don't want. Allowing it to move further back would also help with the counter-balancing of the weight. This is one feature that the Nicrew is better - the weight seems to be more vertical ON the glass, vs AGAINST the glass, so less stress. I used a piece of black acrylic on both sides to spread out the pressure ont the glass. I HAD to use the one on the inside (slightly lowered) to keep water from squeezing up between the glass and the mount, over the back rim. Not sure how, but it was doing it. Adding a piece of black acryllic on the inside, slightly lower than the top of the mount, fixed this problem.2) Ramp up down is limited if you like all blues. I've always run my tanks with just blues in the morning and in the evening. Even when I had just T5s, I put sets of bulbs on different timers. Unfortunately the sunrise/sunset really don't allow you to control it like this. But, I figured out a creative solution that I'm happy with. I set my sunset from 7pm to 7:01p and set my moonlight to 7p to 9p - with the blues set to 60% to match my max blue intensity for sunlight. This turns off my whites at 7p and allows me to enjoy just blues at a the higher intensity as it ramps down over 2 hours. I don't like moonlights that light up the whole tank, which is what these blues do even at 1%. I like the pinpoint almost lazer-like spot of blues shooting down into the tank, which is why I had a separate moonlight and did end up adding that to this setup as well. That freed up the moon feature for me to enjoy just blues at a high intensitiy without the whites. The problem with the sunset is even if you have your whites set to 1% and your blues high, the ramp down keeps the whites on as it ramps down and it's just TOO much white and doesn't look good.3) Whites. The whites are way too much. Even at 1%, you have to have the blues up to 50-60% or so before you really notice the blue. Seems like a lot of lights are like this. I like some white, but right now I only have them maxing at about 3% right now. I might increase this up to a few % points as time goes on as I'm ok with more white during the day.Overall, the cons are not enough to spoil the pros. If my coral responds well to the light over time (so far they have already adjusted really well/quickly, and the light lasts, I'll be extremely happy with my decision. I'll come back and update after I've had it for a few months.

Excelente luz, leí la reseña en otros grupos de corales y a pesar de ser china es de calidad, la luz es profunda, fácil de programar y mis corales están creciendo sin pagar de mas

This light is fantastic, all the way around this light can't be beat for the price. The 6 adjustable channels are easy to tune and has a 1-100 scale for total control. The fan is considerably quiet if inside a canopy or a few feet away. If this light is in your office like me (only about 3 feet away) it's a little loud, but it doesn't bother me. The lights kick on after any channel is set over 25% to keep heat down and to preserve the life of the LEDs, so I can't really complain.The worst part about this light is the mounting arm, which isn't actually that terrible. It does require a little bit of modification (4 washers and some tape) and it's good to go in my opinion. I have dealt with much worse in my time. The good news is that I've contacted SMAT farms and they're working on a 2nd gen arm that they sent me a picture of and it looks much better. It's similar to other industry standard arms and should be a significant upgrade.From the negative (1-2 star reviews) a few of those problems are easily fixable. I don't understand how someone has a purple light. There's 2 white, 2 blue, 1 purple, 1 green channel. The blues completely overpower the purple (as they should) if you turn them up.For as cheap as it is, the timing settings are pretty solid. Some people have mixed them with Apex controllers to get full functionality out, personally I think the onboard timer is enough for me. You can set your full brightness time with a ramp up/down on either end. It even holds this setting if the power goes out.All in all, for the $135-150 this light will cost you, it's worth every penny. I'm planning on putting 4 on my 200 gallon and I'll be coming back with updates.Currently my SPS are reacting well to the light as well as getting great colors out of my zoa colonies. I'm still taking it slow on acclimating my corals up from the stock EVO light, but I haven't had any problems so far.

UPDATE: These lights are growing acros with no issues, amazing value!I've used plenty of reef tank lighting over the years, some cheap, some very expensive. Purely because of the pricing for these lights, they have been the most impressive.Great color rendition from my corals, the color blending of the individual diodes is outperformed by few other lights on the market. The lenses also keep the light from blinding me while I sit on the couch in the same room as the tank. A+The control and included mounting is the weakest point of this light.While the control is a bit lackluster, it is easy to use, and being included out of the box for this price is incredible. Plenty functional, just no crazy bells and whistles.The mounting gets the job done, but it doesn't instill confidence. I have no doubt it'll hold the light, but it does feel a bit flimsy. That being said, again, for the price, including mounting of this sort in the box, that's pretty great.All that being said, there's no PAR data for these lights on the listing, so I took it upon myself to take some readings in my own tank (this is for ONE light only, not two like is shown in my picture).12.5" under the light, I'm able to easily reach 350 PAR directly under the fixture. Within a 6" ring of that, still able to get about 275.17" down, I measured roughly 250. The 6" ring around that was hitting about 210.Now at the bottom of my 45 cube, 26" under the light, I was hitting 170 directly under the light, and the rest of the sandbed was reading at 100-150.The only variables I'm unsure on are growth of my SPS corals, and the longevity of the light. I'll post updates as time goes on.Overall, fantastic lights for the price. Definitely a worthwhile buy.