Question : What type of filtration does it include?
Answer : It includes 4-stage filtration: biological, mechanical, chemical, and prefiltration.
Question : What is Hel-x filter media?
Answer : It is a suspended filter media that creates the optimal surface area for beneficial bacteria growth.
Question : Can this filter be used for both freshwater and saltwater aquariums?
Answer : Yes, it can be used for both types of aquariums.
Question : My unit is constantly purging air. Is there a solve for this issue? I recently bought mine just a week ago.
Answer : At this time, Oase is not acknowledging any issues with their Biomaster line. However, some users have found that adding pre-filter sponges with larger pore sizes and cleaning them regularly can help with air purging. Using a smart switch to power off the filter twice a day may also lessen the purging issue.
Question : Does the heater have its own power source? In other words is it independent of the filter. I want to be able to hook the heater to a temp controller.
Answer : Yes, the built-in heater has a separate power cord from the filter, so it can be connected to a temperature controller.
Question : Does this come with activated carbon foam/media?
Answer : The BioMaster Thermo 350 comes with stock pre-filters. Some users have found that using pre-filters with larger pore sizes can help with air purging issues. Adding activated carbon foam or media is optional and not included with the filter.
Question : Did they fix the issues with the filter purging air or is this still the same design?
Answer : Oase claims that they are not experiencing any issues with the BioMaster Thermo 350 at this time. However, some users have reported issues with air purging despite trying various solutions.
Question : Did Oase ever correct the issue with the lid and purging air constantly?
Answer : As of August 2020, some users have reported issues with air purging despite trying various solutions and have not received a response from Oase regarding this issue.
Question : Does this have the US power plug rather than the UK?
Answer : Yes, the BioMaster Thermo 350 comes with a standard US power plug.
Question : To control the water output should I adjust the intake the out take or both?
Answer : Both the intake and outtake can be adjusted. Start with the outtake and make adjustments one at a time until you are satisfied with the flow.
Question : Is this strong enough for 125g with an in-line Coralife 9-watt UV sterilizer, using an Oase 600?
Answer : It depends on the bioload and tank dimensions. The Oase BioMaster Thermo 850 is recommended for larger tanks and heavier bioloads.
Question : Would this fit, with hoses attached, into a cabinet that is 16 inches tall?
Answer : The BioMaster Thermo 250 measures 9.4 x 9.4 x 14.6 inches, with hoses it should fit in a cabinet with a height of 16 inches.