Review on Maximizing Filtration Performance with Dennerle Filter Element: The Ultimate Aquatic Solution by Ryan Hawkins
Excellent replacement cartridge for Dennerele filters.
I bought these for my two Dennerele filters. You only need to change it once every 3 months. I rinse mine with the water I take out of the tanks during water changes so I don't wash out all the bacteria and reuse them so you can actually last a little longer before changing.
- Designed to keep your water looking crystal clear.
- Doubtful
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