Internal Green Water Killer Filter Aquarium Tank U-V Light Submersible Disinfection Pump

Product looks great but I wouldn't risk plugging it in as it does not appear to be dual voltage. Please include the voltage rating on the website and stop selling this in the UK before you cause an electrical fire. A stepdown converter will cost as much as this product and be noisy. The actual component looks good I just dont think Amazon should sell it in the UK.

The thing they don’t tell you is that it’s a 2 pin plug which I am struggling to get hold of and it’s not a two pin that they use in Spain it’s a US 2 pin

This is a miracle pump. I've had aquariums on and off for the last 30 years and never have I seen this kind of algae bloom. I couldn't get rid of it. It was actually much worse than the "day 1" photo depicts. At the time I took that photo I had removed almost all of the decor due to having to do 50% water changes every 2 days. It was ridiculous. I didn't want to add chemicals that may or may not have harmed the poor fish that were already surrounded by horrible green algae ridden water. I did a lot of research online and this is the pump that was most recommended. After seeing a lot of photo reviews that greatly resembled my very green aquarium, I took a chance on it. I was extremely skeptical that a pump would eliminate the constant green water, but to my surprise it actually worked! I really wanted to do this review because nobody has mentioned using this pump for smaller aquariums. The listing for this particular pump says "for aquariums up to 75 gallons", it doesn't give specifics for small tanks; but I took a chance and tried it anyway as a last resort. My aquarium is a 5 gallon aquarium. They're very common in size and even 5 gallon aquariums can be subjected to the green water conundrum. This pump, even though it doesn't fit in my aquarium upright, it still fits lying down and is fully submerged. On day 1, I couldn't even see my fish unless they were at the front of the aquarium directly under the light. Day 2 wasn't really much different. I didn't think this pump would actually work, but by day three I could not only see the fish but I could also make out the heater on the back wall. My aquarium was clear enough by day 4 that I started moving my other aquarium decor back in. And on day 5 my aquarium was crystal clear. No green water, no traces of green water, and I can see everything in the aquarium including the wallpaper on the back wall. There were no chemicals added. I used this pump in my 5 gallon aquarium for 5 days and my water is more clear than it has been since this aquarium was established and cycled for the very first time. It's like a brand new aquarium and my fish are super happy. I don't know how or why this pump works, but it's pure magic. Having said that, this pump comes fully assembled. It includes oxygen tubing for aeration if you choose to do so. I didn't need the extra aeration so I didn't install that piece. It can be used 4-8 hours a day as the instructions suggest. I personally used this pump for 4 hours during the morning and again for 3-4 hours in the evening to get the results that I did. The results may vary given the size of your aquarium. I plan to leave this pump where it is for now. The instructions say once the water is clear you can reduce the time, so I'll leave it in the aquarium and gradually reduce the amount of time I use it. I did a 30% water change on day 5, AFTER that photo was taken and it was just to clean the gravel and debris from the standard aquarium filter. This green water killer pump is amazing and the results really do speak for themselves. I would have gladly spent twice as much money for the results that I got! It's truly unbelievable!! My fish are happy and their environment is healthy. I'd consider that a win! Highly recommend!!

Dont buy it !! Its not worth your money the material is not that great (feels cheap) plus its 120V with US plug the seller doesn’t say it so be careful.

Muy recomendable, cumple con la función

This thing is AMAZING. We had an algae bloom after a water change. Tried to manage it with more frequent water changes and leaving the light off becase the tank is in an area that gets some natural light but plants still suffered a bit. Got to a point that our fish couldn’t see their food flakes. The only plus is that our shrimp began to thrive since they weren’t being picked on by our betta. Put the device in and within 3 days the tank was pristine. Not sure if it’s also because we have two filters running in it right now, we’re trying to cycle one so that we can eventually remove the other. I am beyond happy with the result, saved us a lot of of extra water changes and less stress on our fish as a result. 100/100 recommend!

After the typical brown algae a new tank experiences the first few months went away, I had crystal clear water for 6 months straight. One day I get up in the morning and was completely surprised my water was completely green. This was the first algae bloom I had ever had in my tank. I was annoyed by this to say the least. I don't like using unessessary chemicals and didn't want to use any kind of algaecide and risk my fish and plants. So I did the usual thing and reduced light and how often they were on. I regularly do a weekly 20% water change but I upped it 50% twice a week. I still did my usual gravel siphoning once a week. I don't like to overdo cleaning my gravel because of my plants. Sometimes it looked like it was getting better but then a couple days later, it would look worse again. I battled for about a month and a half before I started looking into a UV sterilizer. I wanted a pump that completely housed the UV light to protect my fish and plants from exposure. After reading the reviews on this UV pump, I decided to give it a try. The price of $35 wasn't terrible and I just wanted my tank back to normal. When I recieved it, it was already put together. I read that the company tests their pumps before shipping them out to make sure they are fully functional. I appreciate that by the way. So I put it in my tank and plugged it in. It does have an optional bubbler if you want to use it. If you do want to use it, you will have to install it (parts are included). I already have a couple small bubblers in my tank so I opted not to use it. So I can't comment on how it functions. The pump has suction cups so it can easily be placed inside the tank. It should be completely submerged and can be placed vertically or horizontally. The instructions that came with it is pretty clear how to use it properly. There is also an indicator light so you can tell if the light is working or not. It pulls water into the pump and inside the pump, the UV light kills the algae that is in the water. Keep in mind, this pump only kills algae that is in your water column. Not algae that is on surfaces in your tank. On day 2, we didn't notice too much of a difference but it did look just slightly better. Day 3 there was definitely a difference. By day 6, my tank was clear. I decided to leave it in at least one more day because that would have been my weekly scheduled water change day anyway. Well, I'm glad I went ahead and left it in there one more day because on day 7, it wasn't just clear. It was crystal clear. I was so happy. My tank looked like it always had. You could even look in the tank from one of the side panels and see all the way at the end of my tank. By the way, my tank is a 55 gallon so you will have an idea of how much water you are looking through from the side. So on day 7 I unplugged it and removed it before I started doing my water change. I was finally able to fix all my hornwort that got blown around while the pump was running. I only have 2 cons when it comes to this pump. The water flow that returns back into the tank is pretty strong. It was a pretty strong stream of water that blew my hornwort all over my tank and my fish couldn't swim against it. They did quickly figure it out and stayed out of the stream. I did have to feed my fish at the opposite end of my tank so the water flow didn't reach them. Con number 2 will be the size of this thing. Even in my 55 gallon tank, it was big and chunky. It was kind of an eyesore. However, I didn't try to hide it or anything but I had no intention of leaving it in there. Overall, the cons that I have with it doesn't keep me from giving this pump a 5 star review. It was only temporary in my tank so the fact that it worked as well as it did outweighs the water flow and the size of this bad boy. You should run this pump 4 to 8 hours a day at least. However, it does say you can run it 24 hours. I ran mine 24 hours until my tank cleared. I have included photos of what my tank looked like each day. My camera couldn't pick up just how green my water actually was. We couldn't see our fish very well until day 3. I didn't even notice we had new molly fry until day 4 or 5. And to my surprise after my water cleared enough, I saw that my java fern and anubias plants had new leaves! Regardless, in my photos you can still see the day to day changes. Always remember, a UV sterilizer may remove the algae in your water column but it doesn't fix the reason for an algae bloom to happen in the first place. Algae usually happens because of lighting issues and too many nutrients such as phosphates. So make adjustments if you need to and don't rely on a UV sterilizer in place of regular tank maintenance. Bottom line, if you have green water and tried everything you can to fight your algae bloom and want to try the UV method, I highly recommend this one!