I have a 3 gallon tank with a charcoal filter - Marineland brand. The filter has charcoal inside which cannot be removed or added. Per discussion on boards and recommendations I have NOT changed this filter, as it provides a place for the beneficial bacteria to grow. I have left the filter in since starting the tank - around March. When I do water changes I dunk it in the dirty water.
Tank occupant - ONLY my Betta Jack. NO live plants, no other tank mates.
Within the past month or so I noticed a white material on the top of it. Originally I thought it was just minerals. It is looking fuzzy to me now.
What is it? And will it hurt me Betta?
Tank occupant - ONLY my Betta Jack. NO live plants, no other tank mates.
Within the past month or so I noticed a white material on the top of it. Originally I thought it was just minerals. It is looking fuzzy to me now.
What is it? And will it hurt me Betta?