Tag: 20 PPI foam
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I use 20-PPI cut-to-size foam in my 1,200-gallon pond filter. Here is what 20 PPI means, what it catches, why I chose it, how I clean it, and when I would use a different density.
I use 20-PPI cut-to-size foam in my 1,200-gallon pond filter. Here is what 20 PPI means, what it catches, why I chose it, how I clean it, and when I would use a different density.