PA Replacement Air Stone
- Air stones sold in a package of (2).
- Stones should be replaced annually.
- Air stones fit both PA 2 and PA 4 models.
- The air stones are guaranteed to be in operational order upon delivery but have no warranty. These stones are fragile, so do no pull on the white hose connection.
- If after replacing your air stones you notice you still don't have air flow, consider replacing your aerator's diaphragms.
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