Things You'll Need
- Mesh bag
- Rubber band
- Crushed coral
- Peat chips
Instructions
Adjusting pH
Fill the mesh bag, which may typically be made of nylon, with the peat chips to lower the pH, or crushed coral to raise the pH, and close it by tightly twisting the opening.
Using the rubber band, tie the bag shut, securing it.
Rinse the bag under a faucet, removing any dust or debris.
Place the bag at the back of your filter behind the filter cartridge so that water flows through it.