How important are pH, KH and GH to your pond and fish?
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KOI POND**SUDDEN RAISED Ph LEVELS BUT WHY AND WHAT CAN I DO ABOUT IT🤔😒.**
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Aquarium pH, KH and GH step by step guide for beginners. Measure it!
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Winter Sunrise With the Forest Critters | TV for Dogs and Cats | Nature Sounds
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Secrets of GH and KH Revealed
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Pond Aeration Pumps - Three Popular Designs And How To Choose The Best One For Your Pond.
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Aquarium pH, GH & KH: What You ACTUALLY Need to Know
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What is the ideal KH level in my koi pond?
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