Good to know about the siporax...Buying Siporax, which leaches inorganic silicates for many many months.
The extremely high silicates effects Hanna Phosphorus checker, making you think you have very high PO4.
Running a lot of RowaPhos and LC dosing to “bring down my PO” (which it never worked, so I kept doing it), of course my PO4 was completely zero, but the Hanna told me it wasn’t.
This started the spiral of various strains of dinos I’ve been battling for many many months.
Worst mistake I ever made and I’m still paying for it.