Spare Large Head O-Ring for All Pond Solutions External Cannister Filter Models

Used with Part 2 on the All Pond Solutions external filter instructions. Spare UV Steriliser / Clarifier Ballast CUV 207 / 209 / 211 - All Pond Solutions. UV Steriliser / Clarifier Ballast CUV 218 / 224 / 236 / 272 - All Pond Solutions.

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