Seachem Tidal 110 External Hang on Filter

Tidal Power Filters are designed from the ground up to provide your aquarium with high-quality, comprehensive filtration.

Take on large tanks and heavy bioloads with the Seachem Tidal 110. This high‑capacity HOB delivers true self‑priming, a built‑in surface skimmer, wide‑range adjustable flow and intake control, and an oversized cartridge‑free media basket that includes Seachem Matrix for instant biofiltration. The bottom‑to‑top flow path maximises media contact for clearer, more stable water in aquariums up to 400 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 while improving oxygenation.
• Bottom‑to‑top flow path maximises media contact, reducing bypass and boosting filtration efficiency.
• Pop‑up maintenance alert indicates when cleaning is due; safe overflow routes water back to the tank.
• Extra‑large, removable basket fits your choice of media; ample room for sponge, ceramics, carbon, or resins.
• Wide adjustable flow window; telescoping intake targets draw from different depths.
• Quiet operation with aerating return, levelling foot, and optional heater clip for even heat dispersion.

Specifications

• Tank size: Up to 400 L (110 US gal), freshwater or marine.
• Flow rate: 2000 L/h (450 GPH), adjustable.
• Power: 10 W at 230 V/50 Hz (approx.).
• Filter volume: Approx. 3.2 L media capacity.
• Dimensions (approx.): 29.5 × 19.2 × 24.2 cm; wall clearance ~9.5 cm.

What’s in the box

• Tidal 110 filter unit with self‑priming pump and surface skimmer
• Extra‑large removable media basket
• Coarse mechanical sponge
• Seachem Matrix bio‑media
• Levelling dial, telescoping intake, heater holder clip

How it works
Tidal 110 pulls water from both the surface and subsurface, then forces it bottom‑to‑top through mechanical and biological media before returning it to the tank. This increases contact time, improves oxygenation, and maintains stable, clear water with less bypass than typical back‑to‑front HOB filters.

Setup tips

• Rinse media; stage sponge below biomedia (e.g., Matrix/ceramics) so mechanical precedes biological filtration.
• Start at mid‑flow; adjust upward as livestock tolerate to balance circulation, plant movement, and noise.
• Extend the telescoping intake to reach mid‑ and lower‑water debris; tune the skimmer to clear surface film in 24–48 hours.
• Clean sponge in dechlorinated tank water; avoid over‑cleaning biomedia to preserve beneficial bacteria.

Ideal for

• Large planted displays, cichlid or goldfish tanks with heavier bioloads, and marine fish‑only or quarantine systems up to 400 L
• Hobbyists needing cartridge‑free flexibility, powerful yet finely adjustable flow, and clear maintenance cues

Why choose Tidal 110
Compared to cartridge‑based HOBs, Tidal’s huge, configurable basket and bottom‑to‑top flow minimise bypass and let you fine‑tune media for your water chemistry and stocking. The visible service alert and safe overflow simplify upkeep, delivering dependable performance in larger aquariums.

All Tidal Filters come with Seachem's Matrix bio-media to get you started.