66GPH Aquarium Hang Filter

This gentle filter is perfect for my 4-gallon shrimp tank. I've got a pre-filter sponge on the filter inlet to prevent the shrimp from getting sucked in. It's very low power/flow, so it takes a while to prime itself when you turn it on (back on after it was off), but it works well enough and is great for a nano tank. It's pretty much silent (at least as far as I can tell in a room with a bunch of other aquarium equipment running all the time).

I cannot speak to the longevity of this filter, since I have only used it for two days now. I understand that some of these reviews state that it dies after about a month. I hope that is not the case. However, I can confirm that it is unnoticeable, as far as noise is concerned! You cannot hear the motor or the impeller turning. You have to focus and strain your ears to hear anything at all. If you do, it is the movement of the water which you hear, not the filter! And the look and construction is simple! There are no fancy curves or obstructing attachments which would make it difficult to clean. Since I discard the black block of foam that is provided (as the only filter media) and replace it with a name brand filter pouch, it obstructs a little of the inbound flow which results in a minor back flow into the tank. This is irrelevant to me as the majority of the water flows through the white filter pouch and the carbon that is inside the pouch. I buy size M filter cartridge (from that popular name brand), discard the blue or green plastic frame, pour the silver packet of carbon into the white pouch, rinse, roll it up and wiggle that tiny "burrito" vertically into the section where the black foam was supposed to fit. I also have a sponge filter running in my little three-gallon desktop tank, so theoretically, I have addressed physical, chemical and biological filtration. I don't know if this is overkill, but it's just what I do. My sponge filter is set to flow very slowly just in front of this "hang on filter" in an attempt to diffuse the water flow... because this filter is STRONG. I would never put a betta into this environment! Not even if I diffused the water flow with a mountain range of rocks! That's how strong this filter is. This filter can easily match a five-gallon tank, of course, depending on the species and quantity of fish you are raising. If I had a handful of small fish in a five-gallon like danios or minnows, it's perfect. It just depends. For example, I would indeed use this filter for a fighting fish if on the gentlest flow setting, in a ten-gallon tank, and the tank was heavily planted with live plants. My little tank has a thicket of anubias and Java ferns and 7 Rummy Nose Tetras. I know. Overcrowded. But they are fat and healthy. They get partial water changes twice a week! Altogether, I love this filter. My water is pristine!

***UPDATE 2: Well the filter floss didn't work and somehow this filter claimed the life of another fancy guppy. For this reason, I cannot recommend this filter. I'm not entirely sure how the guppies are fitting through the tiny slots on the intake tube and I'm not sure how the guppy got through the filter floss, but I found chunks of its body in the sponge of the filter so I can only assume it was sucked in somehow. It's a very odd occurrence but it's happened twice so I took the filter out and can't recommend it to anyway with fish. ***UPDATE: THIS FILTER KILLED MY FISH!! My fancy guppy got sucked into the very tiny slots somehow and was killed. I would caution anyone with small or slower fish with longer fins (such as betta) to watch out with this filter and I had it on the lower setting. I didn't think a fancy guppy was small enough to get sucked in and I have had the filter running for at least 6 weeks with no incidents until now. Apparently it's always a possibility. After the death of one of my fish, I modified the intake by wrapping some filter sponge around the slots. The company should consider selling this filter with a precut filter sponge as an effort to minimize fish deaths. I'm not sure how the rubber bands will hold up in water is my main concern now but I will still give this filter two stars because it is a good and powerful filter for just $10. Just use it with precaution as it is more powerful than you think. I did state in my original review that it was powerful but didn't realize it was powerful enough to dismember a guppy. I will update if filter sponge does not work. ORIGINAL: Perfect for my micro tank (1.5 gallons). Be careful, it's very powerful even on the lowest setting, but just what I needed. I have tetras and guppies which don't seem to mind the powerful filter. Doesn't catch everything but definitely helps, super easy to clean. Only complaint is the piece they include help hold the filter flush against the tank doesn't stay on so my filter falls back a little but not a deal breaker as it still works

Pro's: quiet, small, comes mostly assembled. well made for the price point. Con's: The stabilizer foot does not work with all tank sizes. This is just a little to big for a 1 gallon tank with the filter slot cut out, so can't use lid. The lid to the filter will dislodge the suction tube really easy and is fiddly to get seated correctly. The output flow just barely changes the water flow so there is a strong current in a 1 gallon tank... but would be ok for larger tank.

Ideal for a small 10 gallon tank. No compliants for the price.

Muy buen filtro en relación al precio, tienes lo justo por lo que pagas. Súper silencioso. El diseño podría estar mejor pues el agua fluye por encima del material filtrante en lugar de hacerlo de abajo hacia arriba, la abertura para el paso del agua es algo angosta y alta, nada que no se pueda modificar un poco con algo de habilidad. Tiene muy buen movimiento de agua, un poco mas del que realmente necesitaba pero con el ajuste de flujo al mínimo me funciona bien.

Broke after 3 weeks of use on my 7.5 gallons. Motor seem to have overheated. For the sake of your fish, invest on another brand for your filter.

Es muy bueno, no hace ruido y el filtrado del agua es excelente

The idea behind this product is great. A small external hanging filter for small fish tanks. Most Betta fish lovers will be really interested in this product. The flow can be regulated, so your Betta fish will not get stressed while keeping your tank clean. Unfortunately the product I received is a bit noisy and vibrates, so I had to find a way to "cushion"it. I ended up putting a piece of sponge between the tank and the filter. The sponge absorbs most of the vibration. Keeping this in mind, perhaps it is the product I received, but would buy it again if needed. The plastic material of the container seems to be a bit thinner, so not sure how long it will last. The pump itself is running a bit warm, will see how things go in the next few days. ----- Update: After a few days the motor finally died. I contacted the seller and they will be sending a replacement unit.