Seed Contribution is too High
From BODDoctor
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.
Recommendations
- 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.