OASE · Updated August 2026
OASE BioMaster Thermo 850 Canister Filter: full specs
OASE BioMaster Thermo 850 Canister Filter. Every price and spec below is linked to its source and dated — no guesses.
Source: aquaristikshop.com verified ✓ corroborated verify in ledger
The OASE BioMaster Thermo 850 Canister Filter has no published US price yet. It earns a Gold Deskmark — 75/100 pay-blind standing, #2 of 14 in class.
Verified Aug 1, 2026 · figures linked to their source in the table below
Cheapest aquarium filters: AquaClear 70 Power Filter — $79.99
Is the OASE BioMaster Thermo 850 Canister Filter a good buy?
On the spec sheet, its media capacity of 8 L is the highest of the 8, its flow rate gph of 400 is above the median of the 14, and its tank size gal of 250 is above the median of the 14.
Specifications
| Price (US) | Not published Only a EUR price could be sourced from a fetched page (aquaristikshop.com: €349.85, a German retailer), not a verbatim US-dollar figure, so priceUsd is left null rather than converted/guessed. This is a EU-manufactured product line with limited US retail presence. |
|---|---|
| Brand | OASE |
| Released | — |
| Type | canister |
| Flow rate gph | 400 |
| Tank size gal | 250 |
| Media capacity (L) | 8 |
| Media stages | 4 |
| Wattage | 32 |
| Self priming | Yes |
| Dimensions (in) | 9.4 x 9.4 x 21.1 |
Source: aquaristikshop.com (verified 2026-08-01) · corroborated by oase-livingwater.com. The German retailer aquaristikshop.com's product page for the current-generation "BioMaster² Thermo 850" (OASE's own product-family page, cited as corroboration, confirms this is the model sold under the BioMaster Thermo 850 name in English markets) states verbatim: pump flow "1500 l/h" (≈400 US GPH, the rounder figure independently used by several English-language aquarium retailers, so 400 is used for flow_rate_gph), pump power consumption "32 Watt", a separate integrated "400 W" heater (not blended into the wattage field — see methodologyNotes), maximum tank size "bis zu 850 Liter" (≈225 US gal by strict conversion, but English-market retailers consistently market this exact model as "up to 250 gallons (850L)", the figure used here), dimensions "240 x 240 x 535 mm" (converted to 9.4 x 9.4 x 21.1 in), and "filter volume: 8.0 liters". The page describes four distinct filtration stages (mechanical, biological, optional chemical, and customizable media), used for media_stages=4. A separate OASE product description for the closely related BioMaster Thermo 600 states "the self-priming function guarantees easy start-ups" — the same pump/priming mechanism used across the whole BioMaster Thermo range — so self_priming is set true for the 850 as well. No US-dollar price could be sourced.
Frequently asked questions
How much does the OASE BioMaster Thermo 850 Canister Filter cost?
The OASE BioMaster Thermo 850 Canister Filter has no published US price as of 2026-08-01.
What are the OASE BioMaster Thermo 850 Canister Filter's key specs?
OASE BioMaster Thermo 850 Canister Filter (OASE): type canister, flow rate gph 400, tank size gal 250, media capacity l 8, media stages 4. Full sourced spec sheet verified 2026-08-01.
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