EasyClean pre-filter chamber for extremely simple filter cleaning and top comfort
Available with or without integrated HeatUp adjustable heater for undisturbed views of the underwater world without visible technology, optimum temperature level, improved safety
Perfect water quality thanks to the high filter volume consisting of Hel-X and filter sponges
The Oase BioMaster Thermo 850 External Filter provides effective filtration for aquariums up to 850 litres. Engineered for reliability and longevity, the BioMaster multi-stage canister filter features an optimum combination of mechanical and biological filtration to produce clean and healthy water for your fish. The advantage of the Oase BioMaster Thermo edition over the normal BioMaster is that it discreetly incorporates the Oase HeatUp 400w Aquarium Heater which allows for fully adjustable temperature control.
Each BioMaster has an EasyClean Pre Filter module which can be easily removed from the canister for cleaning without the need to disassemble the whole filter. This innovative Pre Filter section consists of premium-grade filter foams which remove suspended debris as the water passes through, extending the service life of the biological media.
The Oase BioMaster Filters feature a further 2 mechanical foam filtration stages above a biological stage which utilises Oase's highly effective Hel-X 13 Biomedia to complete the advanced and thorough cleaning process. Hel-X 13 is aptly named because it has up to 13% more biological settlement area compared to the original successful Hel-X Biomedia. This results in cleaner, clearer and ultimately healthier water due to the greater amount of beneficial bacteria contained within the filter which provides a more rapid breakdown of debris and waste particles.
Further innovative features include an automated shut-off and safety lock mechanism, which prevents water from escaping when the Pre Filter Module is removed or when performing filter maintenance. An integral priming button allows for a fast and easy start-up during installation or after cleaning. The BioMaster also allows for easy flow regulation via the flow control lever located at the front of the filter or using the adapter set.
We accept all major Credit and Debit cards, and these are processed via a third party payment gateway called Opayo.
We also accept payments via PayPal, PayPal credit, Clearpay and Klarna which are both pay in 4 interest-free instalments.
Also, you can pay using Android and Apple Pay if you are using a compatible device.
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
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Next Day Shipping Upgrade - Cut off is at 4:00 pm
Orders after that time will be processed the next working day
Please Note: We only deliver ponds and pond plants on our own delivery vehicles!
The blue highlighted area on the map below is where we deliver on our own vehicle! Unfortunately, if you are not in one of these postcode zones we are unable to deliver certain items such as plants, small glass items and selective other products.
We offer a few different delivery options depending on the size and value of your order.
Orders over £50 qualify for free mainland UK (excludes Northern Ireland) delivery which will arrive within 3-5 working days of the order being processed.
Residents of Northern Ireland, please provide your EORI or XI Number.
If you do not have one, please follow the information at https://www.gov.uk/eori
Orders Below £50 in Mainland UK will be charged a standard delivery fee of £5.99.
Additional Shipping Charges
For any orders that do not include Aquariums, the below is charged:
Next Working Day Parcel Delivery to Mainland UK - £7.99 OR £2.99 if the order is over £50
Standard Parcel Delivery to Northern Ireland £8.99
Standard Parcel Delivery to Scottish Highlands & Islands £9.99
Standard Parcel Delivery to Jersey & Guernsey £12.99
For all Aquarium deliveries (Excluding biOrbs & Smaller Aquariums), the below is charged:
Next Working Day Pallet Delivery - £20
2 Hour Booking Slot Pallet Delivery - £20
Pallet Delivery to Northern Ireland - £45
Pallet Delivery to Isle of Wight (PO36 and Above) and Scottish Highlands (AB, PH, IV1-36, IV, KW1-14, KY, PA21-41) - £45
Pallet Delivery to the Scottish Isles (KA27-28, PA60-90, ZE, JE, GY, IM, IV40-56, KW15-17, PH42-44, PA20, PA42-49) - £120
Pallet Delivery to Outer Hebrides (HS) - £140