Pondlab - Oxygen

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Test for the Oxygen Level in all types of pond water. Oxygen is essential for the fish, plants and filter bacteria. The concentration of dissolved oxygen in the water can drop to dangerous levels causing hypoxia stress. The most accurate Oxygen Test Kit on the market - Accurate to 0.5 mg/litre. Comprises: 25 tests Product Variants TK - 4606 £ 18.37