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Re: Use of Tetra Active filter in cold (10 °c) water

Subject: Re: Use of Tetra Active filter in cold (10 °c) water
by Fishlady on 19/1/2021 10:52:54

It's generally accepted that filter bacteria function less well below 20C and can become inactive at low temperatures so I suspect that is the problem. You may want to ask Tetra directly using the form on this page: https://www.tetra.net/en-gb/products/tetra-filteractive