travellife Posted June 15, 2018 Report Share Posted June 15, 2018 I have a 4 gallon tank with both a mini HOB and an in-tank sponge filter. Since I don't remove that much water when doing water changes it's difficult to totally clean the sponges within the removed tank water. Do you think it is OK to add primed tap water in order to have enough volume to properly squeeze out the sponges? Quote Link to comment Share on other sites More sharing options...
Valek Posted June 16, 2018 Report Share Posted June 16, 2018 I guess it's fine. I do it with ro water. Tank water is much better though Quote Link to comment Share on other sites More sharing options...
NickAus Posted June 16, 2018 Report Share Posted June 16, 2018 Quote Do you think it is OK to add primed tap water in order to have enough volume to properly squeeze out the sponges? Its fine. Quote Link to comment Share on other sites More sharing options...
chappy6107 Posted June 18, 2018 Report Share Posted June 18, 2018 yep, you'll be fine. NickAus 1 Quote Link to comment Share on other sites More sharing options...
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