john1959 Posted December 16, 2020 Share Posted December 16, 2020 if you have a cycled freshwater tank can you use a uv sterilizer will it kill the good bacteria ? Link to comment Share on other sites More sharing options...
Wingman12r Posted December 16, 2020 Share Posted December 16, 2020 49 minutes ago, john1959 said: if you have a cycled freshwater tank can you use a uv sterilizer will it kill the good bacteria ? The BB(beneficial bacteria) live in the filter, substrate and on every surface inside your aquarium rather than in the water. Using a uv sterilizer will not harm you cycle in any way. 1 Link to comment Share on other sites More sharing options...
john1959 Posted December 16, 2020 Author Share Posted December 16, 2020 Thank you Link to comment Share on other sites More sharing options...
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