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How to Change a ZAAP Pure 20, UV Bulb

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TEST for ammonia (0), nitrite (0), PH (7-8.5), and Total alkalinity>100 Clean debris out of pond; do not scrub the sides, that green slim is loaded with beneficial bacteria and fish food. Change about

Nitrifying Bacteria Facts One of the most important, and least understood, aspects of successful aquarium keeping is biological filtration and its function in the nitrogen cycle. Traditionally, novice

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