# OASE BioMaster Thermo 850 Canister Filter vs Seachem Tidal 110 Power Filter: specs and price compared

A sourced, side-by-side comparison of the OASE BioMaster Thermo 850 Canister Filter (OASE) and Seachem Tidal 110 Power Filter (Seachem) among aquarium filters.

## Side by side

| Spec | OASE BioMaster Thermo 850 Canister Filter | Seachem Tidal 110 Power Filter |
| --- | --- | --- |
| US price | not published | not published |
| Brand | OASE | Seachem |
| Type | canister | hang-on-back |
| Flow rate gph | 400 | 450 |
| Tank size gal | 250 | 110 |
| Media capacity (L) | 8 | 3.2 |
| Media stages | 4 | — |
| Wattage | 32 | 12 |
| Self priming | Yes | Yes |
| Dimensions (in) | 9.4 x 9.4 x 21.1 | 11.625 x 7.625 x 9.5 |

## Key differences

- Type: OASE BioMaster Thermo 850 Canister Filter canister vs Seachem Tidal 110 Power Filter hang-on-back
- Flow rate gph: OASE BioMaster Thermo 850 Canister Filter 400 vs Seachem Tidal 110 Power Filter 450
- Tank size gal: OASE BioMaster Thermo 850 Canister Filter 250 vs Seachem Tidal 110 Power Filter 110
- Media capacity (L): OASE BioMaster Thermo 850 Canister Filter 8 vs Seachem Tidal 110 Power Filter 3.2
- Wattage: OASE BioMaster Thermo 850 Canister Filter 32 vs Seachem Tidal 110 Power Filter 12
- Dimensions (in): OASE BioMaster Thermo 850 Canister Filter 9.4 x 9.4 x 21.1 vs Seachem Tidal 110 Power Filter 11.625 x 7.625 x 9.5

## Sources

- OASE BioMaster Thermo 850 Canister Filter: https://www.aquaristikshop.com/aquaristik/OASE-Aussenfilter-BioMaster2-Thermo-850/788008/ (aquaristikshop.com, verified 2026-08-01)
- Seachem Tidal 110 Power Filter: https://www.seachem.com/tidal-110.php (seachem.com, verified 2026-08-01)

Canonical: https://frontdeskreview.com/gear/aquarium-filters/oase-biomaster-thermo-850-vs-seachem-tidal-110/
Cite: Per The Front Desk Review, OASE BioMaster Thermo 850 Canister Filter (not published) vs Seachem Tidal 110 Power Filter (not published) — sourced spec-by-spec comparison at https://frontdeskreview.com/gear/aquarium-filters/oase-biomaster-thermo-850-vs-seachem-tidal-110/
License: CC BY 4.0.