Seachem Tidal Power Aquarium Filter - 35 Gallon Large Fish Tank Filter,black

These are hands down the best HOBs on the market. Large media area, self priming and QUIET. If you hear a raddle, fidfle with it. Lube the impeller and run pump (in water) w/o the filter.. it should be quiet. If its not, its the impeller, if it is, theres something in need of adjustment within the housing. Easy stuff. Dont worry, it feels scary tweeking them at first, but they're sturdy. Done right, this is a great system. Its reliable, and I can sleep with it running (and I'm picky as they come). I have 2 35's and a 55. They have a minor flaw with the intake if you have shrimp but course sponge or ACO has an answer. Over all, for the price, you can't beat it.

This could very well be the best HOB power filter for a small fish tank. By small, I mean tanks less than 30 gallon. The Tidal 35 has some standout features that make it an excellent choice for a small tank. It is capable of comprehensive filtration: biological, mechanical, and chemical. I say "perhaps" because I have not tried the newest Marineland Penguins. I owned an Emperor 400 many years ago and threw it away because it was a pain to prime the pump after a water change. I understand that issue has been resolved in the new products from Marineland. Anyway, back to the Seachem Tidal 35. This filter's most important feature is the internal (In the tank) motor. This filter will restart even if the media box is completely dry. It does not rely on siphon to work. It is a "push" system. The impeller is inside the fish tank, below the water level. The impeller pushes the water to the filter. This means it will restart reliably after a power failure. There is never any need to prime the filter. Priming means to add water to the filter box in order to start the siphon. The Seachem does not require manufactured filter media. Yes, you can roll your own. Your knowledge and choice of materials will determine the effectiveness of the filter. The size of the filter box will allow you to pack a lot of filtration material. More than enough for a 35 gallon tank. There are other very good power filters on the market. I also love the Fluval C series and the Aquaclears. The Fluval C series has the advantage of having the biological media above the water level. Thus, the Fluval C series has a small wet-dry area to grow beneficial microbes. Biological filtration is greatly improved when your media has exposure to the atmosphere. Bacteria thrives on oxygen. So this is where the Fluval C series and the Marineland filters have their advantage over the Seachem Tidal. However, most situations do not call for maximum biological filtration efficiency. Bacteria grow on every interior surface of your tank. Even submerged media will have more than enough capacity to provide biological filtration for the filter's rated gallons. This Seachem will easily handle the biological load for its rated capacity. This is a great product from Seachem. It is made for them by the Italian maker, Sicce. Yes, it is more expensive compared to its competitors. But the fact that you do not need to prime the filter is a big convenience factor. It also makes the filter more dependable. The surface skimmer will work great if you have carbon in the filter box. Otherwise, it will not be able to remove surface oils. You can reuse or repurpose the small zip bag that comes with the filter. I have freshwater clams in this fish tank. Therefore, I do not want to filter out the floating debris from the water column. Clams are filter feeders. This filter's main purpose is to provide biological filtration and water circulation. I removed the foam filter. I am only using the bag of Matrix biomedia. This allows small particles, such as phytoplankton, to pass through. At least most of them. I either reduce the water flow or turn off the filter when adding phytoplankton to the tank. I also have a Seachem Ammonia alert in this tank. Yes, adding liquid phytoplankton adds to the biological load of the tank. But the clams have to eat too. The Ammonia Alert will let me know if a spike should occur. This is a great filter. I can recommend it without any reservations. For bigger tanks, you might want to also check out the newest Marineland Emperor Pro 450. I have not owned the newly redesigned Emperor. It is only for big tanks. The Tidal 75 is probably its biggest competitor.

Great overall filter. I am new to aquariums and did a lot of research to find this, glad I did. Features I particularly like: ** self-priming -- particularly fantastic for power outtages, absent-minded family members who don't think about restarting pump when you are at work, and when you have to do water changes and need to restart. Worth the extra coin. ** customizable media -- Do yourself a favor and read up on filter media (chapter 7) at aquariumscience dot org. I removed the seachem rocks and replaced with 8 plastic pot scrubbers to increase biofiltration surface area. ** cleanability?? -- based on aquariumscience dot org website, you will do better NOT to clean your filters regularly as the filter company suggests. This will allow you to build up your biofiltration in the filter media and get clean water faster. ** overpowered for my 10 gallon tank -- this 35 gallon-worthy filter is enough to create airflow in my 10 gallon tank so I don't need an extra pump. It should be enough if/when I upgrade to 20 gallon. ** quiet sound -- only really hear the waterfall effect. If you are new to aquariums and/or having problems with your current aquarium, read up on evidence-based aquarium management at aquariumscience dot org. I really wish I had found that page BEFORE I bought all the fancy media (this filter pump is still a good purchase, though!).

Quiet. Simple set up. Easy to clean. Small size. Perfect for my 15 gallon with 10 small fish but inadequate for anything larger.

Hands down the best filter I've bought. I have 2 tanks, one with this Seachum and the other with the Fluval C3. The Seachum is super quiet and the motor never gives out (like the Fluval does every few months). I never have to clean this either, just squeeze the sponge out when changing water (typical protocol). With the Fluval, if any gunk gets in the motor it shuts down and will burn out the motor. Not this Seachum filter though. I HIGHLY RECOMMEND!

Probably the best HOB filter out there. It works great and I would definitely, and may, buy again.

Very quiet and easy to setup! Not sure how clean the tank will be, but so far so good!

I really want to love this thing but it’s just ok. I’m running it on a 29g and have had it for almost a year now to replace my sponge filters. I LOVE that it self primes and that motor is underwater so it’s quiet. Do the fish like that? Who knows. I have a community tank with soil under sand and lots of live plants, drift wood and rock scaping. I have shrimp so I’ve had to do some modifying to keep them out of the system but that wasn’t hard. Used the toe end of some black nylons over the whole in-tank part of filter and it works great. What I don’t like is how noisy it is with water movement. Some say the water level has to be at right level which does help but I find the filter media itself keeps getting full of good bacteria and causing uneven water level pouring over the spillway. Doesn’t seem to matter what I do, it sounds like a water fountain is running. It fixes when I top off tank and rinse media but it comes back in a few days. I’ve tried all different water levels and even hotglueing a thin sheet of clear plastic to end of spillway to extend ramp but that didn’t help no matter what shape I gave it. I also wish the media compartment was bigger. Some might be happy with it but I’d say size up so you can tweak what you’re running in there. I have another 29 that is using an old larger Aquaclear with motor noise and that tank is crystal clear, needs almost no filter maintenance even though it has more water flow it is quiet. I do like the adjustable water flow dial overall design build of this thing and cleaning is easy. I think the adjustable dial for fitting it to different thickness of tank rims is pretty slick as well. Overall, maybe size up and power down would be my advice and expect some water noise.

El filtro es muy bueno, tiene un poder excelente, es sumamente silencioso y además viene con Matrix de Seachem, de igual forma tiene suficiente espacio para agregar más cantidad de material filtrante, por la manera en que devuelve el agua al acuario, oxigena muy bien el agua y con el Skimmer consigues no tener biofilm ni restos de comida en la superficie Una diferencia muy importante entre este y los Aquaclear es el color, pues este es oscuro y el Aquaclear es traslúcido lo cuál no es muy bueno pues las bacterias son fotosensibles y podrían morir más fácilmente con los Aqueaclear, esa es otra ventaja de este Tidal 35, que la ser oscuro, las bacterias se mantienen mucho mejor, igualmente los materiales de construcción son excelentes, 10/10.

It great filter and works fine and it's so quite but I wish that the seller mention on the details that it is 110 V just be careful and read the label before using it

In the past I've used Aquaclears. I found Aquaclears often have a (fairly quiet) rattling or humming noise, and were quieter with the lid removed. So far this filter is very silent. I haven't had it running for long so hopefully it doesn't get much louder with age. The loudest sound I get is from trickling water if my aquarium's water level isn't high enough. If I keep the water level high enough I can't hear trickling water either. I think having the motor under the water (compared to an Aquaclear where the motor is outside) helps keep it quiet. The flow rate can also be adjusted to a very wide range. At its minimum it's a very gentle flow, probably good for a 10 gallon or even a 5.5 gallon. I have it at full strength on a 20 gallon with dwarf puffers. I also like the surface skimmer, since the aquarium it's in seems to get more surface oil than my other tanks. The things I don't like are fairly minor (except for #3): 1) There's a white circle on the side of the motor that can easily be seen. There's also a gray knob on the front. You can see both of them on the picture of the box. They don't blend so well with the black of the rest of the filter. (I have a solid black aquarium background) 2) Like a lot of people mention there's no intake tube to extend to the bottom of the tank. It's not a huge problem for me but it would be a nice extra add-on. I think the fixed depth is around 3 to 4" deep. 3) It's more expensive than other HOB filters. In the past I've resisted buying the Seachem Tidal in favor of cheaper filters like Aquaclear. But I'm happy I spent a bit more this time.

These are fantastic filters. Low wattage high output. Would like to have seen an uptake tube though.

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