Mark Knutson Posted April 13, 2022 Share Posted April 13, 2022 I have always had a pond in my yard for the last 30 years but have always struggled with green water. I have never covered the bottom of the pond with gravel or rock. Does anyone think if I add a substrate to the pond it might help keep the pond water cleaner? I have heard that good bacterias that grow in the substrate can help keep the water clean. I would love to hear if anyone is using a substrate in their pond and what they use. I have even tried the ultra violet light in my filter to fight the algae without any luck. Thanks in advance for any advice you can provide me to deal with the green water. Link to comment Share on other sites More sharing options...
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