- Change your freshwater systems partially on a regular basis
- Change consistently about 15-20% on weekly basis to keep your tank free from harmful bacteria
- Better practice is to change in smaller quantity frequently like twice weekly
- Activated carbon should be replaced monthly if possible
Here's why:
- Water changes will help to remove compounds that are not removed by any filtration methods such as nitrates and phosphates
- Accumulated detritus and waste will be cleaned