kyle&amy April 10, 2018 Share April 10, 2018 Cleaning out very OLD aquarium stuff and found a bunch of Bio-Balls - most are still in the bags. Does anyone use these anymore? Thanks Tom Link to comment Share on other sites More sharing options...
zygote2k April 10, 2018 Share April 10, 2018 great to make a degassing chamber or use in an actual wet/dry with a skimmer. Link to comment Share on other sites More sharing options...
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