Get more in there.
Diatom blooms can be overcome within about 1-3 weeks.
Be careful, they are the scrouge that is the main pest, besides poor macro growth they tend to be the main pest/issue.
Ruppia is fine, it can live at 4x the sea salinity.
Not just brackish.
Add any macro you can get a hold of for now.


Regards,
Tom Barr