2-Fan

We just got our axolotl over the winter so keeping it at a safe temperature for him hadn't been a problem. Over the last week or so here in Oklahoma, temperatures soared into the 100's and our axolotl is kept upstairs, so when the temperature of the water in his tank started creeping into the 70's I started doing my research. I found this and after reading all of the helpful reviews, especially for axolotls I didn't hesitate to try it, considering the price of a tank cooler was not something I wanted to have to purchase, but certainly would have if this didn't work. He's a part of the family. I'm so glad I made this purchase. It is literally a life saver considering my research informed the that the ideal temperature for them is between 60°-64° and anything above 70° becomes problematic, even deadly. I received the tank yesterday after work, about 4:00 and the temperature on the tank was approaching 72° (first picture). I immediately took it out of the box, plugged it in, and like other reviews stated, it didn't fit over the top of the tank, but for now it's being held up by the glass lid I had over the tank (second picture), works fine, but I will try velcroing it, like another review stated they did so that my son (he's not a child, he's 16) doesn't accidently knock it into the water when feeding him. By 6:00, in the heat of the day and when the upstairs A/C is only able to cool the upstairs to 75° and with the fans on high, the tank had already cooled down to 68° (3rd picture)!! 4° in just two hours! I was very happy and so was he. He went right up to the fans and stayed there for a bit, almost like a human cooling themselves in a fan. I think he liked the current it gave off, but it was cute. The fans on high are a little loud, I mean, it sounds about like a little desk fan you would have on high. I checked again on his temperature when I woke up this morning and it had cooled his tank below 66°! That's as low as my thermometer reads so if it's lower than 66° or higher than 84° the thermometer strip is just solid black, so given that it was below 66° I felt like it would be okay to turn the fans to low. After coming home from work today, again in the heat of the day, with the fans on low he's setting at a cool 66° (4th picture). Couldn't be happier with my purchase!

I bought the single fan version of this for a 10 gallon tank with two small goldfish. They do fine in temperatures up to about 75 degrees but get grumpy and agitated at anything warmer, so I've been running this on hot days this summer. It cools the tank down quickly on the lower setting even when it's 80+ degrees in the house and is so effective that I need to leave the heater in to stop the temperature from getting too low. The rim of my tank is a little too thick for the fan to clip onto (the plastic isn't particularly flexible so there's not a lot of wiggle room in the thickness they say this will work with), but it rests easily on the rim in a corner propping the hood open an inch or two. With this setup, I lose almost an inch of water to evaporation on a hot day. The fan has two speeds but the lower one is more than adequate to keep my tank cool. I wish that instead of the higher speed, there was an even lower one that I could run at night - my only real complaint is the noise level, which isn't outrageous for a fan this effective, but the tank is in my bedroom and this is WAY too loud to sleep through. Overall it's a great little fan for the price and I'd buy it again.

The first one I got was defective but it was switched out pretty quick so that was a plus. All in all it’s a great fan and it cools my 125 gallon aquarium pretty rapidly. I bought the 4 fan version and it’s definitely the right call. It’ll the fan is on a temperature controller so it kicks on at 79• and cools until 78. It takes about a half an hour or less to cool the tank so that’s very efficient. Their are two drawbacks but neither are that big. 1). The screw it cons with to adhere to the tank only works for rimless or small rim applications. I just used industrial strength Velcro from my local hardware store and it solved that problem. 2) The fan is a bit noisy when it kicks on. My tank is in my living room and when the fan kicks on it’s definitely audible. Not a terribly loud noise but enough to notice. Long story short use Velcro and deal with the noise and get a really cost effective way to cool your aquarium.

This is a great product. I use it on my 20g long axolotl tank. Fan has 2 speeds which is nice. I currently use low but it’s also winter time. We will see what summer brings. The fan is not loud, even on high. Just has more of a sound of moving air. I originally had this blowing across the tank but was getting a lot more evaporation than I wanted. So what I did was pull the ends off and flip the fans over to suck air out. I’m still adjusting the angle to keep the water at a constant temp. Which is typically 63*. I have the fans run all the time to not have temps fluctuate. As far as mounting, it will not fit on a rimmed tank. I had it mounted with double sided tape, but it would eventually loosen and start to lean. So what I did was buy alum c channel, tapped 2 holes, glued it to the unit, and used nylon screws to hold it. I feel this setup is much better than an open top and dealing with tons of evap and buildup of minerals on the glass, frame, and light.

I bought this item around the end of February and Less than 6 months later some of the fan don't work anymore. I installed it over the rim of my sump that way it wasn't showing. Much larger than I thought it would be but that should provide more cooling. Or so I thought. Pros: Easy to install provided that your tank in rimless and the glass or acrylic is not too thick. Has hi/low switch that can be toggled. Cons: The fans they used to keep the cost down are terrible. They were by far the loudest thing in my system when they are set to full power. That are made to be used around the tank, but there is nothing done to help protect them from the water. 3 of my 4 four fan I noticed had shorted out and the connection on the fan. Where the wire comes in and meets the circuit board for the fan. The are signs of electrical burn on the fan and the wire. I decided to replace with much better fans than can more air easier while still being quieter. Honestly they do say you get what you pay for. I'm not saying it is a horrible product and you shouldn't buy. I just want you to be aware of what happened to me as a fellow consumer. You should get a much better made product from a different batch.

I have been unable to find a decent aquarium fan that is made for a black rimmed Aqueon tank. Some reviewers said this fits on a black rimmed tank if you force it or if you damage your tank by removing some of the black rim. This absolutely does NOT fit on a black rimmed tank. It is made to fit on a half inch rimless tank. I am not going to damage my tank and I am unable to find a good alternative "out of the box", so I ordered a three fan Petzilla from Amazon and two adapters from someone who does 3d printing to make this product work for my tank. My total cost was approx $28 for the fan and $37 for the two adapters plus shipping. That's why I don't feel this Petzilla fan is a good value, because I had to buy 3d printed adapters to make it work for my 55 gallon axolotl tank. Additionally, even on the low setting, the fans are kind of loud. They are louder than my filters. The cord is also a bit short. Not long enough to make a drip loop. I will try to leave an update to my review after I've been using the fan for several months to see if it is long lasting and durable. The previous aquarium fan I had purchased in a different style from a different brand stopped working while laying in a drawer over the winter because it was cheaply made so we'll see how this one holds up. The adapters shown in the picture were purchased from Leafgreen Solutions. Overall I am happy so far with my Petzilla aquarium fan. I wish they would make one specifically for Aqueon black rimmed aquariums because this kind of tank is so popular, widely available, and economically priced. **Update** Stopped working after 11 months of continuous use. Pros: cools my tank down by several degrees Fahrenheit high and low setting and off switch adjustable angle of the fans 3 fan heads for larger tank size black color matches my tank trim and filters Cons: louder than I'd like - way too loud does not fit on typical black rimmed tank without adapter - only fits on rimless tanks cord too short concerns about long term durability - only worked for 11 months and then died.

Works awesome! My Axolotl aquarium sat around 71/72 mid day and 68 at night. Worried about the temps getting higher I ordered the 3 fan for my 10 gallon tank and it dropped my temps down to 64 degrees when fully adjusted up! My apartment is currently 75 degrees and the fans do well keeping the water cool. Knowing that, I can comfortably use this when I upgrade to a 20 gallon. Also the fan DOES fit around the black ledge around your aquarium. As for noise, it’s really not that bad for it being 3 fans and it doesn’t cause any extra vibrations on the tank but does add a little extra water current. My Axolotl doesn’t seem bothered one bit by it though.

I live in Florida and my wife makes me keep my aquarium outdoors smh, during the summer months temperatures get into the 90s and this little fan machine helps cool it down by about 8 degrees F which is the difference between life and death for my fish. I also use natural spring water to make big ice cubes I drop in occasionally to help in the cooling. I was skeptical at first but this fan was a game changer. The only issue I have had is with mounting the fan, my tank rim was about an 1/8 inch thicker than the fan mount so getting it on was tricky and required me to have to stretch the plastic mount with a wrench without breaking it but it can be done. I wish there was a way to adjust it to fit any tank rim, so be sure you check and measure before purchase. If your tank rim is slightly smaller you can adjust it to fit but not if larger. Other than that the fan is pretty quiet and effective.

Agréablement surpris de la puissance de ces petits ventilateurs. Je dois garder mon eau froide pour mes axolotls et je ne possède pas de sous-sol alors très difficile de garder l'eau froide. Je possède une aquarium 35 gallons et les ventilateurs en position minimum abaisse la température de l'eau de 3 degrés!! J'imagine qu'au maximum j'atteindrais les 4 degrés. Légèrement bruyant (surtout au maximum) mais un mal nécessaire pour ceux dans une situation comme la mienne cela en vaut tellement la peine. Reste à voir la durabilité mais très satisfait jusqu'à maintenant.

Little noise & chinese product, not from usa.

I bought this aquarium chiller for my tank during the warmer months, and overall, it worked as described. The fans definitely do their job - they move a good amount of air and can noticeably lower the water temperature by a couple of degrees, which is a big help for tropical fish. That said, I had to dock one star because the unit turned out to be larger than expected for my small aquarium. The fans extended over the sides awkwardly and looked a bit bulky in my setup. If you have a medium to large tank, it should be perfect - but it may not be the best fit for compact tanks or rimless setups.

Danger to hang on your aquarium tank because of the sharp screw. Very hard to adjust the angle of the fan because of the design. It's so much hard and all the time you want to adjust the fan you will feeling fan cracked. It's not super silent. It doesn't have speed adjustment controller as advertise on the box. However you can select two speeds by a small button at the side of the fan.

This fan works amazingly well. In the hot weather it helps to keep my sump area cooler.