# EHEIM Classic 2217 (600) External Canister Filter vs OASE BioMaster Thermo 850 Canister Filter: specs and price compared

A sourced, side-by-side comparison of the EHEIM Classic 2217 (600) External Canister Filter (EHEIM) and OASE BioMaster Thermo 850 Canister Filter (OASE) among aquarium filters.

## Side by side

| Spec | EHEIM Classic 2217 (600) External Canister Filter | OASE BioMaster Thermo 850 Canister Filter |
| --- | --- | --- |
| US price | not published | not published |
| Brand | EHEIM | OASE |
| Type | canister | canister |
| Flow rate gph | 264 | 400 |
| Tank size gal | 160 | 250 |
| Media capacity (L) | 6 | 8 |
| Media stages | — | 4 |
| Wattage | 20 | 32 |
| Self priming | — | Yes |
| Dimensions (in) | 8.1 x 8.1 x 15.75 | 9.4 x 9.4 x 21.1 |

## Key differences

- Flow rate gph: EHEIM Classic 2217 (600) External Canister Filter 264 vs OASE BioMaster Thermo 850 Canister Filter 400
- Tank size gal: EHEIM Classic 2217 (600) External Canister Filter 160 vs OASE BioMaster Thermo 850 Canister Filter 250
- Media capacity (L): EHEIM Classic 2217 (600) External Canister Filter 6 vs OASE BioMaster Thermo 850 Canister Filter 8
- Wattage: EHEIM Classic 2217 (600) External Canister Filter 20 vs OASE BioMaster Thermo 850 Canister Filter 32
- Dimensions (in): EHEIM Classic 2217 (600) External Canister Filter 8.1 x 8.1 x 15.75 vs OASE BioMaster Thermo 850 Canister Filter 9.4 x 9.4 x 21.1

## Sources

- EHEIM Classic 2217 (600) External Canister Filter: https://eheim.com/ersatzteil-shop/technik/aussenfilter/classic/classic-600 (eheim.com, verified 2026-08-01)
- OASE BioMaster Thermo 850 Canister Filter: https://www.aquaristikshop.com/aquaristik/OASE-Aussenfilter-BioMaster2-Thermo-850/788008/ (aquaristikshop.com, verified 2026-08-01)

Canonical: https://frontdeskreview.com/gear/aquarium-filters/eheim-classic-2217-vs-oase-biomaster-thermo-850/
Cite: Per The Front Desk Review, EHEIM Classic 2217 (600) External Canister Filter (not published) vs OASE BioMaster Thermo 850 Canister Filter (not published) — sourced spec-by-spec comparison at https://frontdeskreview.com/gear/aquarium-filters/eheim-classic-2217-vs-oase-biomaster-thermo-850/
License: CC BY 4.0.