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polywise's latest activity

  • polywise replied to the thread GSP Mat.
    I have a descent sized colony 7"x14"-ish its on a plastic tile not attached to anything in the tank. seen in tis video
  • polywise replied to the thread interesting RODI finding.
    Did not keep track of timing.. I would change the DI resin when TDS meter started to move. Now all I can tell you is that It is...

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