Place the rock under the area that holds the bio balls or place the rock where the bio balls were and increase the water level of the tank?
Related Questions
- Place the rock under the area that holds the bio balls or place the rock where the bio balls were and increase the water level of the tank?
- One more question. For a fish only tank, any advantage to using an Eheim wet/dry, to a conventional one with bio balls?
- Does the expansion in surface area increase the volume of water?
