Seed Contribution is too High

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This usually means that the seed is higher than standard methods say it should be. Standard Methods says that the seed contribution should be 0.6 - 1.0 mg/L oxygen depletion. If it takes more seed to get the GGA to be 198 +/- 30.5 mg/L that is okay according to standard methods.


  • Change the seed material. Artificial or freeze-dried seeds often do not deplete enough GGA even when a contribution of greater than 1.0 mg/L is used.
  • Lower the seed amount, as long as the GGA does not head down with the lowered quantity of seed.
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