I inherited a 180 gallon tank recently, the protein filter is not working in the tank, but has a lot of reef - no corals, few fishes. Do have couple of bubble-filters only. What kind of bio filters would you recommend ?
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Use YouTube. Lots of videos with lots of info on this.I inherited a 180 gallon tank recently, the protein filter is not working in the tank, but has a lot of reef - no corals, few fishes. Do have couple of bubble-filters only. What kind of bio filters would you recommend ?

