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The Tidal 35 by Seachem is a high-performance, self-priming power filter designed for aquariums up to 130 liters (35 US gallons). Engineered in partnership with Sicce, it features advanced filtration flexibility, surface skimming, and maintenance alerts. With its tool-free design and smart flow technology, the Tidal 35 is perfect for both beginner and experienced aquarists who want quiet, reliable, and customizable filtration.
Key Features
- Designed for aquariums up to 130L (35 US gal)
- Fully adjustable flow rate (up to 500 L/h or 130 GPH)
- Surface skimmer to remove biofilm and debris
- Self-priming pump – no manual siphoning required
- Maintenance alert pops up when the filter needs cleaning
- Large media capacity with no need for proprietary cartridges
- Heater holder slot included
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Quiet operation and no bypass filtration design
| Model | Length | Width |
Height |
Tank Size | Flow Rate |
| Tidal35 | 6 ⅛ in (15.5 cm) | 5 ⅛ in (13 cm) | 7 ⅛ in (18 cm) | Up to 35 US gallons (130 Liters) | 130 US GPH (500 L/H) |
| Tidal55 | 8 1⁄16 in (20.5 cm) | 6 ⅛ in (15.5 cm) | 8 ⅜ in (21.4 cm) | Up to 55 US gallons (200 Liters) | 250 US GPH (1000 L/H) |
| Tidal75 | 10 ⅛ in (25.5 cm) | 7 in (17.8 cm) | 9 ½ in (24.2 cm) | Up to 75 US gallons (300 Liters) | 350 US GPH (1500 L/H) |
| Tidal110 | 11 ⅝ in (29.5 cm) | 7 ⅝ in (19.2 cm) | 9 ½ in (24.2 cm) | Up to 110 US gallons (400 Liters) | 450 US GPH (2000 L/H) |
Returns Policy
You may return most new, unopened items within 7 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
ShippingWe can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.
When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.
Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.
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