--- product_id: 105389272 title: "Tidal Filter, 35 gal. (135 L) NA 120 V, 60 Hz, US, 2P" brand: "seachem" price: "B/.217" currency: PAB in_stock: true reviews_count: 13 category: "Seachem" url: https://www.desertcart.com.pa/products/105389272-tidal-filter-35-gal-135-l-na-120-v-60 store_origin: PA region: Panama --- # 1703 L/hr max flow Maintenance alert system Self-cleaning impeller Tidal Filter, 35 gal. (135 L) NA 120 V, 60 Hz, US, 2P **Brand:** seachem **Price:** B/.217 **Availability:** ✅ In Stock ## Summary > 💦 Elevate your aquarium game with the filter that works smarter, not harder. ## Quick Answers - **What is this?** Tidal Filter, 35 gal. (135 L) NA 120 V, 60 Hz, US, 2P by seachem - **How much does it cost?** B/.217 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.com.pa](https://www.desertcart.com.pa/products/105389272-tidal-filter-35-gal-135-l-na-120-v-60) ## Best For - seachem enthusiasts ## Why This Product - Trusted seachem brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Never Miss a Beat:** Maintenance alert pops up when filter media clogs, so you’re always ahead of performance dips. - • **Full Media Contact:** Innovative bottom-to-top flow ensures every drop passes through your chosen filtration media—no shortcuts. - • **Custom Flow Control:** Adjustable pump dial lets you tailor water flow perfectly to your aquarium’s unique ecosystem. - • **Oxygenate Like a Pro:** Ventilation slots and aeration grooves maximize gas exchange for crystal-clear, oxygen-rich water. - • **Mess-Free Maintenance:** Removable filter basket snaps into the lid for drip-free, hassle-free cleaning—because your time is valuable. ## Overview The Seachem Tidal Filter 35 is a high-performance aquarium filter designed for tanks up to 35 gallons. Featuring a powerful 1703 L/hr self-priming pump with a self-cleaning impeller, it ensures efficient, low-maintenance filtration. Its unique bottom-to-top water flow maximizes contact with customizable filter media, while ventilation slots and aeration grooves optimize oxygenation. The built-in maintenance alert system signals when cleaning is needed, complemented by an adjustable flow dial and a removable, drip-free filter basket. Backed by a 3-year warranty (extendable to 5), this filter is engineered for both freshwater and saltwater environments, making it the go-to choice for discerning aquarium enthusiasts. ## Description Ventilation slots-- Ventilation slots in the lid of the filter and aeration grooves in the outflow ensure that water returned to the tank is fully oxygenated and maximize gas exchange during filtration. Bottom-to-top flow-- The pump pushes water up into the basket of the filter, entering through the bottom of the basket and being pushed out the top. A bottom-to-top flow ensures that water comes into contact will all filter media, and cannot go around or over filter media as with hang on back filters with a back-to-front flow. Maintenance alert-- Over time, filtration media can become clogged with detritus reducing or obstructing the flow of water through it. When this happens in Tidal™ filters, water is redirected around the filter and back into the aquarium through an outlet on the side. The redirected water pushes up the blue maintenance alert on the top of the filter, signaling that the filter needs to be cleaned. Surface skimmer-- The surface skimmer will capture the water from just below the surface, where excreted fish oils accumulate, as well as deeper in the tank removing floating debris. Flow regulation-- The flow on the pump is adjustable using the dial on the front. No filter cartridges-- The filter basket has a huge capacity to hold filtration media of your choice in the configuration of your choice. All Tidal™ Filters come with Seachem's Matrix™ bio-media to get you started. No mess maintenance-- The basket is fully removable and snaps into the lid of the filter for easy and drip-free transit to a sink or hose for cleaning. Self-priming pump-- Self-priming pump means there is no need to fill the filter basket with water, start a siphon, monitor the filter, or any of the other headaches of starting a new filter. Self-cleaning impeller-- The self-cleaning, corrosion-resistant impeller is suited for both saltwater and freshwater environments. This cuts down on maintenance and makes the filter suitable for a wide range of environments. Adjustable leveling device. A leveler on the base of the filter lets the filter adjust to a variety of aquarium styles. 3 year warranty-- All Tidal™ Filters are guaranteed against defects of materials and workmanship for a period of 3 years from the date of purchase and register your filter, except for the pump’s impeller. This can be extended to 5 years by registering your filter. The warranty covers the replacement of the defective parts. FOR HELP-- These parts have never worked together before, so noise from your filter is normal for up to a week after first use. If you have ANY concerns, please reach out to our product support specialist to confirm the noise or any troubleshooting you may need. Please reach out to Seachem Tech Support at 888.732.0003 or by email support@seachem.com Review: After some modifications, this becomes the best HOB you can buy. - One might think I should give this fewer stars because it needs to be modified, but not everyone will need this filter modified; for many people it will be good as is. I modified it simply to make it more suitable for smaller fish in smaller tanks. If I couldn't make these modifications, I would not buy this filter. I'd stick with a sponge filter. Even though I love the concept of HOB filters, there hasn't been a single one on the market I've liked until this one... but modified. First, you have to buy the part from Aquarium Coop that renders the skimmer on this filter nonfunctional. This makes the filter safe for small fish and invertebrates. This is a must-have; without it, this filter is no good with small fish and inverts. Second, you need a small silicone o-ring attached to the water flow control shaft, where it passes through the opening in the lid. Here's why: the flow control works via a small flag/paddle on the shaft that sits in the water path and restricts flow when turned to a low setting. The problem is that water pressure pushes against that flag hard enough to lift the entire shaft up out of its seated position, which displaces it and renders the low-flow setting useless. The o-ring adds friction right where the shaft passes through the lid, holding it down against that upward pressure so it actually stays at whatever flow level you set. This is a very easy mod. You can set your water flow down to a trickle if needed. Once you make these two modifications, this filter is nearly perfect. Initially I expected it to produce too much vibration transferred into the water, since the motor sits in the tank, but, to my surprise, it doesn't do that at all, or not enough to bother the fish. With these mods in place, you can add this filter to pretty much any aquarium. It won't push your betta around, and it won't suck up your nano fish or little fry. It's quiet, in my experience. It's very simple to use, and easy to maintain -- it's built from solid, simple pieces rather than something overly complicated. It always starts up -- just plug and play. I don't even need to manually fill the filter with water; it primes itself. The motor itself is also very refined. Hopefully, this filter continues working to my satisfaction. If anything changes, I'll revise this review. Review: Very Impressed - I was shocked at how quiet this filter is. (Though it has only been in operation a few days, so TBD). If it gets loud, I will update my review. I like the bottom-up filtration process, and included bio-media. I think i’ll add a bit of poly-fill on top to “polish” the water, but otherwise it seems great OOTB. ## Features - Perfect for 35 gal or smaller aquariums - Self-priming pump - Self-cleaning impeller ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07NJ28T1X | | Best Sellers Rank | #16,633 in Pet Supplies ( See Top 100 in Pet Supplies ) #59 in Aquarium Filters #130 in Aquarium Filter Accessories | | Brand | Seachem | | Brand Name | Seachem | | Capacity | 35 gallons | | Customer Reviews | 4.5 out of 5 stars 2,690 Reviews | | Global Trade Identification Number | 00000116065818 | | Included Components | Filter media | | Installation Type | Freestanding | | Item Type Name | Aquarium Filter | | Item Weight | 0.27 g | | Manufacturer | Seachem Laboratories | | Material | Matrix™ bio-media | | Material Type | Matrix™ bio-media | | Maximum Flow Rate | 1703 liters per hour | | Model Name | Tidal Filter 35 | | Model Number | 6581 | | Number of Items | 1 | | Other Special Features of the Product | Flow regulation, surface skimmer, adjustable intake flow, heater mount, maintenance alert | | Part Number | 6581 | | Power Source | Corded Electric | | Purification Method | Mechanical Filtration | | Special Feature | Flow regulation, surface skimmer, adjustable intake flow, heater mount, maintenance alert | | Supported Water TDS Level Maximum (PPM) | 300 | | UPC | 000116065818 | | Unit Count | 1 Count | | Warranty Description | 3 year warrenty | ## Product Details - **Brand:** Seachem - **Capacity:** 35 gallons - **Included Components:** Filter media - **Installation Type:** Freestanding - **Item Weight:** 0.27 g - **Material:** Matrix™ bio-media - **Model Name:** Tidal Filter 35 - **Power Source:** Corded Electric - **Purification Method:** Mechanical Filtration - **Special Feature:** Flow regulation, surface skimmer, adjustable intake flow, heater mount, maintenance alert ## Images ![Tidal Filter, 35 gal. (135 L) NA 120 V, 60 Hz, US, 2P - Image 1](https://m.media-amazon.com/images/I/4107gpItzYL.jpg) ## Available Options This product comes in different **Style** options. ## Questions & Answers **Q: What is the minimum space you need behind the tank to fit this Tidal 35? I only have about 3 inches to the wall.** A: Unit Length: 6 ⅛ in (15.5 cm) Width: 5 ⅛ in (13 cm) Height: 7 ⅛ in (18 cm) Media Chamber Length: 5 ⅜ in (13.8 cm) Width: 2 in (5.2 cm) Height: 4 ⅞ in (12.5 cm) Wall Clearance 2 ¾ in (7 cm) Tank Trim Clearance 13⁄16 in (2 cm) Internal Tank Clearance 1 ⅜ in (3.5 cm) **Q: Is this difficult to shrimp safe?, or would you recommend leaving as is?.** A: I don't think this filter can be made shrimp safe. I would recommend the Aquaclear filter and covering the intake with a Powkoo intake filter sponge. **Q: What is the widest the rim can be to use this?** A: 1 inch **Q: Will this fit my 36 gallon bow front** A: Yes it will fit on the back side of tank that has a straight edge. Awesome filter( surface skimmer is a huge plus) only filter that has one. Also purchase a bag of Purigen by Seachem and add it to the medium section of the filter. Polishes the water to be crystal clear! You won’t be disappointed!!! ## Customer Reviews ### ⭐⭐⭐⭐⭐ After some modifications, this becomes the best HOB you can buy. *by M***X on June 27, 2026* One might think I should give this fewer stars because it needs to be modified, but not everyone will need this filter modified; for many people it will be good as is. I modified it simply to make it more suitable for smaller fish in smaller tanks. If I couldn't make these modifications, I would not buy this filter. I'd stick with a sponge filter. Even though I love the concept of HOB filters, there hasn't been a single one on the market I've liked until this one... but modified. First, you have to buy the part from Aquarium Coop that renders the skimmer on this filter nonfunctional. This makes the filter safe for small fish and invertebrates. This is a must-have; without it, this filter is no good with small fish and inverts. Second, you need a small silicone o-ring attached to the water flow control shaft, where it passes through the opening in the lid. Here's why: the flow control works via a small flag/paddle on the shaft that sits in the water path and restricts flow when turned to a low setting. The problem is that water pressure pushes against that flag hard enough to lift the entire shaft up out of its seated position, which displaces it and renders the low-flow setting useless. The o-ring adds friction right where the shaft passes through the lid, holding it down against that upward pressure so it actually stays at whatever flow level you set. This is a very easy mod. You can set your water flow down to a trickle if needed. Once you make these two modifications, this filter is nearly perfect. Initially I expected it to produce too much vibration transferred into the water, since the motor sits in the tank, but, to my surprise, it doesn't do that at all, or not enough to bother the fish. With these mods in place, you can add this filter to pretty much any aquarium. It won't push your betta around, and it won't suck up your nano fish or little fry. It's quiet, in my experience. It's very simple to use, and easy to maintain -- it's built from solid, simple pieces rather than something overly complicated. It always starts up -- just plug and play. I don't even need to manually fill the filter with water; it primes itself. The motor itself is also very refined. Hopefully, this filter continues working to my satisfaction. If anything changes, I'll revise this review. ### ⭐⭐⭐⭐⭐ Very Impressed *by R***R on August 10, 2026* I was shocked at how quiet this filter is. (Though it has only been in operation a few days, so TBD). If it gets loud, I will update my review. I like the bottom-up filtration process, and included bio-media. I think i’ll add a bit of poly-fill on top to “polish” the water, but otherwise it seems great OOTB. ### ⭐⭐⭐⭐⭐ Perhaps best filter for a small fish tank *by C***I on August 14, 2020* 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. ## Frequently Bought Together - Seachem Tidal Power Aquarium Filter - 35 Gallon Large Fish Tank Filter,black - Seachem Tidal 35 Filter Replacement Foam (2 Pack), Blue - Seachem Laboratories Tidal 35 Polishing Pad (2 Pack) --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.com.pa/products/105389272-tidal-filter-35-gal-135-l-na-120-v-60](https://www.desertcart.com.pa/products/105389272-tidal-filter-35-gal-135-l-na-120-v-60) --- *Product available on Desertcart Panama* *Store origin: PA* *Last updated: 2026-09-10*