My friend has bought a Whisper Filter for his 15 gallon fresh water which has some tetras in it. The tank has been up for over 2 years.
My question is that he is replacing the UGF with the Whisper. Does he need to remove the UGF grading in order to get all the gunk that was trapped below, or can he just plug up the holes to where the filter tubes were?
If he needs to remove the grading, how does one do it with fish already in there and will is be too traumatizing for the fish and I guess him too?
Thanks to all who reply!
My question is that he is replacing the UGF with the Whisper. Does he need to remove the UGF grading in order to get all the gunk that was trapped below, or can he just plug up the holes to where the filter tubes were?
If he needs to remove the grading, how does one do it with fish already in there and will is be too traumatizing for the fish and I guess him too?
Thanks to all who reply!