| NAME | Oyster Shell |
| ACTIVE INGREDIENT | Calcium Carbonate (CaCO₃.) app. 95% |
| USED FOR | Buffering pH - Preventing pH crashes |
| Maintaining KH (Calcium Hardness) of Water |
| DOSAGE |
| One (1) kg | 1,000 Litres Water |
| Replace with new Oyster Shell | Every 3 - 6 Months |
| Please note, that the rate of Oyster Shells dissolving, will vary from pond to pond. |
Japanese Koi Farmers have been using Oyster Shell for generations to maintain a stable pH, they use Oyster Shell as their only pH buffering media.
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