Relassy Led Aquarium Light, Led Reef Coral Light with Dual Replaceable E27 Bulb, Adjustable Clip On Seawater Aquarium Light Dimmable for Freshwater Seawater Fish Coral Aquatic Plant Growth

This is a very bright light for the price. using a PAR meter, at 11 inches (which is where I have tested lights for other small tanks) I got a reading of 198 umols. That means that even over a considerably deeper tank, this would give you good light for growing plants. Even with only one lamp running, I got 100 umols. The flexible "necks" on the lights make it possible to arrange the lights in a number of ways. I think the might be very useful, for instance, over a paludarium, where you wanted the light further away from terrestrial plants and closer to aquatic plants.Now the bad part. The clamp is a C-clamp, and not very large. I tried, in vain, to find a single tank (and I have 9) ANYWHERE in my house, were I could use this light, and I couldn't. Another reviewer said they attached it to a table edge, and that would work perfectly. I don't have a tank sitting on a table! So keep that in mind when setting up your tank if you want to use this light. You MUST have a "lip" of some sort that sticks out below the BOTTOM of the tank in order to mount the light.Keep in mind, that because of this limitation, the deepest tank this light can be mounted over is about 16" deep. At that depth, taking a 2" substrate into consideration, you'll get a PAR of approximately 70 umols right under the lights, with both lights running together. So, low-moderate light. Enough for a nice, low light tank, but not for high light, sensitive plants.This light could definitely be useful, and the price is excellent. But I hope the manufacturer comes up with a more useful method of attaching it to the tank rather than to the stand!

Had a problem with one bulb and the company was super helpful and responded lightning quick. I was very impressed.The light is a little bit more yellow than I would have wanted for a marine tank, it would need to be a bit more blue for it to look like most marine lights. That said it looks good enough for my needs and is bright enough for a 10 gallon nuvo fusion which is what I am using it over. It grows chaeto well, might be the perfect light for a small fuge for someone.I really like the light and I really like the customer service. 4 stars is just because of the blue being a little lacking for a "reef" light. Still would highly recommend. If you already had a blue light in place adding this would look really good(I added an additional blue only led I had sitting).

I love it!!! The clamp is firm and easy to use. The stalks are flexible and firm, once you bend them the light stays put. The color is bright and clear and highlights EVERYTHING in our 5gal freshwater tank. The bulbs get warm but not dangerously hot to touch. Having two lamps for the price of one is awesome. I kind of wish the listing was more clear about that although it was a pleasant surprise especially since we are doing Aquaponics on our aquarium so I have one light dedicated to the Aquaponics and one to the aquarium. My only mild complaint is there was no instructions for how to dim the lights. I found out how to do so via the QA portion of the listing but it still wasn’t clear though I did figure it out in the end. I hope the controls are durable for longterm dimming since you have to click them a few times to get to the setting you want.

We are currently using the Relassy Led light on our Reef and FOWLR aquariums and absolutely love how it lights up the aquarium.We are using 2 sets of lights per aquarium 200 gallon and 180 gallonHaven't really seen a difference with the UV light as yet but I'll update this review in a few weeks.I love the dual setting so both lights do not need to be on, but one thing I would like to see added would be a dimmable setting or at least a night mode that would make these even better, because these lights are super bright, but they bring out the beautiful colors of the coral and fish.If you have tall aquariums these are a bit hard to mount since they attach to the stand or whatever you are using. We had to build a separate stand for mounting so the lights would be above the top of the aquariums.

I was really hoping this light would work for me but it has too many problems. The light is bright and seems adequate but the bendable arms are too weak to hold up the lamps and they sag badly. The lamp housings get so hot you can’t even touch them. I consider this a safety concern as well as having the ability to effect the water temperature. I will be returning this.

Your browser does not support HTML5 video.  I like the lights and how bright they are, but they do not mount very well with the mounts that are included. It does brighten up my 75 gallon salt water tank. It is a good value for the money. If you can make a way for them to mount then I say go for it

Good:1. The lights can be individually controlled. They are Dimmable 0% or 100%.2. Single power cord for the product.3. Used it continuously for 12 hours but no significant heat on the lamp facing the water. This is the most significant advantage for me. No heat what do ever.4. Very good heat dissipation from the top of the lamp. One lamp was running much cooler than the other lamp. I was able to touch the heat sink with my hands after 12 hour use.For a small tank these are great because you can change the height individually for each lamp, depending on the coral requirements. Very cost effective lamp. Would recommend this lamp for small tanks.Lamps can be replaced individually.Now to the disadvantages:Not Dimmable/programmable, felt that the goose neck is little flimsy, but the lamps held the position.Giving this product a 4 because of cost, individual lamp replacement, heat dissipation. If it was programmable I would give it 5 stars.

Had a light hood go out and the price of a new one was almost the price of a tank.Bought these and other than suggesting you measure the distance between the stand and tank top, make sure you can actually clip these to your stand.My reef tank loves them!