The quality can be different for different regions. You should have insitu data to compare the results with real data.
As @ABraun said, you.can provide salinity and temperature to improve the results.
Also the factors and exponen for tsm and chl computation can be adapted to match your region.
You have to find out which values are best.
When opening the properties for the band you can edit the values.
Once you found good values you can provide them to the processing.