Hey all, I have been battling diatoms for quite some time now. My LFS told me to use bakers yeast. 1/4 teaspoon for 400 gals. I have a 100 gal tank so I should dose 1/16 of a teaspoon every 3-4 days? Should I just add the yeast in the water or should I dissolve it beforehand? @Randy Holmes-Farley do you know how bakers yeast combat diatoms?