Tag Archives: bio master thermo

Product Review: OASE BioMaster Thermo 250 Aquarium Filter

I have been keeping aquariums over 50 years, and seldom have I encountered a product that pleases me as much as the OASE BioMaster filter I installed a little over a month ago. My aquarium is an 18 x 18 x 24 tank that holds about 21 net gallons. It is heavily planted, with carbon […]