If you do a proper search on the B.E.S.T. you will find it was designed for filtering water from a rain water tank. It was never designed to filter mains pressure water.
-- Edited by Mike196 on Monday 5th of July 2021 11:47:57 PM
I would never buy a filter that has no specification.
There is also no point in filtering water as you fill the tank, in my view.
The bugs will happily grow in the tank later, despite many people believing otherwise. Hence treat the water in the tank and filter just before use.
Cheers,
Peter