mtnmonster Posted October 26, 2021 Share Posted October 26, 2021 Right now I have a tetra whisper internal filter. I'm switching to a sponge filter to have more control of flow. What is the best way to make the switch without disrupting the tank parameters? Right now I'm going through a nitrite spike so I won't be actually doing this until the spike levels out. I've never used anything other than hob filters so any advice is appreciated. Link to comment Share on other sites More sharing options...
StevesFishTanks Posted October 26, 2021 Share Posted October 26, 2021 Use them both at the same time for a few weeks 8 Link to comment Share on other sites More sharing options...
Gator Posted October 26, 2021 Share Posted October 26, 2021 Use both in the same tank for about 3 weeks to get the sponge filter seeded with a sufficient amount of nitrifying bacteria. Link to comment Share on other sites More sharing options...
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