Seachem Tidal 35 Hangon Filter 135L

Keep your aquarium crystal clear with the Seachem Tidal 35. This compact HOB filter offers true self‑priming, a built‑in surface skimmer, adjustable flow control, and a large cartridge‑free media basket that includes a coarse sponge and Seachem Matrix for instant biofiltration. Ideal for nano to mid‑size freshwater or marine tanks up to 130 litres.

Key benefits

• Self‑priming start‑up with self‑cleaning impeller for reliable restarts after water changes or outages.

• Dual intake with surface skimmer removes biofilm and floating debris to boost clarity and oxygenation.

• Bottom‑to‑top flow path maximises media contact, reducing bypass and improving filtration efficiency.

• Pop‑up maintenance alert indicates when cleaning is due; safe overflow routes water back to the tank.

• Large, removable basket fits your choice of media; includes coarse sponge and Seachem Matrix.

• Quiet, adjustable flow suited to planted tanks, shrimp, bettas, and community aquariums.

Specifications

• Tank size: Up to 130 L (35 US gal), freshwater or marine.

• Flow rate: 500 L/h (adjustable).

• Power: 5 W at 230 V/50 Hz.

• Filter volume: Approx. 0.7 L media capacity.

• Dimensions (approx.): 15.5 × 13 × 18 cm; wall clearance ~7 cm.

What’s in the box

• Tidal 35 filter unit with self‑priming pump and surface skimmer

• Large removable media basket

• Coarse mechanical sponge

• Seachem Matrix bio‑media

• Levelling foot and adjustable intake/skimmer controls

How it works
The Tidal 35 draws water from both surface and subsurface, then forces it bottom‑to‑top through mechanical and biological media before returning it to the tank. This maximises contact time, improves oxygenation, and maintains clear, stable water.

Setup tips

• Rinse sponge and Matrix; load sponge below Matrix so mechanical precedes biological filtration.

• Start at mid‑flow for shrimp or bettas; increase as livestock tolerate to balance circulation and noise.

• Tune the surface skimmer to clear film within 24–48 hours, then fine‑tune for daily use.

• Clean the sponge in dechlorinated tank water; avoid over‑cleaning Matrix to preserve bacteria.

Ideal for

• Nano to mid‑size planted aquariums, shrimp colonies, bettas, and peaceful communities up to 130 L

• Marine quarantine or fish‑only systems needing adjustable, quiet flow and easy maintenance

Why choose Tidal 35
Unlike cartridge‑based HOBs, Tidal’s large, cartridge‑free basket minimises bypass and lets you customise media for your bioload. The visible service alert and safe overflow make upkeep simple and spill‑free, ideal for home and office setups.