Ags11
Member
I have a 30 cm cube tank with a small sponge filter. I clean the filter once a month but it doesn't seem to collect anything. In my old tanks from the early 2000's the filter would get full of sludge in a couple of weeks, but this little filter just feels like sponge and no dirt comes out in the cleaning bucket. Possibly the flow is not enough and the filter is surrounded by thick grass that probably intercepts most dirt.
The airstone built into the sponge filter isn't very good and the bubbles are quite coarse. I am thinking of replacing the entire filter with a good airstone. I suspect that the lush growth in the tank including rampant surface plants would provide enough biological filtration.
The tank is stocked with 5 CPDs and two Nerites. I do 40% water change every week.
Attaching two pictures of the tank - once when it started showing the little filter unit and another showing the current level of plant growth.
The airstone built into the sponge filter isn't very good and the bubbles are quite coarse. I am thinking of replacing the entire filter with a good airstone. I suspect that the lush growth in the tank including rampant surface plants would provide enough biological filtration.
The tank is stocked with 5 CPDs and two Nerites. I do 40% water change every week.
Attaching two pictures of the tank - once when it started showing the little filter unit and another showing the current level of plant growth.