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system 1

  1. Equipment
    (I posted this also in the filters forum) I have a System 1 aquarium filter that uses what looks like a cut off whole house filter cartridge that looks like this but this one is much longer: https://www.homedepot.com/p/GE-Unive...XUSC/100094268 I wondered if anyone else had a System 1 and...
  2. Filtration
    (I posted this also in the equipment forum) I have a System 1 aquarium filter that uses what looks like a cut off whole house filter cartridge that looks like this but this one is much longer...
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