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HOW TO USE
Trough Rocks keep clean water clean, they do not clean dirty water. It is best to empty and clean your trough before use.
Once your trough is clean. Remove tag from the Trough Rocks bag and set aside. Place the entire Trough Rock bag fully submerged into the water. That's it!
Set a reminder in your diary for 4 months time. As the rocks are natural they lose their charge over time and need replacing.
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