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Re: [APD] Water changes and CO2/non CO2 methods
Well planted, lower light aquaria ("natural", "balanced", or Walstad-type)
do better without frequent water changes. These tanks usually get their
relatively meager supply of nutrients from the substrate or the water column
via natural processes, and water changes remove those nutrients.
I do occasionally get algae in such tanks, but it is easily kept in bounds.
High light, high-nutrient tanks are clearly a different matter.
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