This is actual science, not hobby observation on no3 toxicity…Not a single refernece or citation for any of the claims. Many of them being false.
Nitrates are dangerous to fish? At what level and how long of an exposure? Please cite studies for this.
GFO for nitrate removal? I know it is used for PO4 removal but have never heard anyone using it for NO3 control. @Randy Holmes-Farley can GFO remove NO3?
What algae thrives off NO3?
Nitrate toxicity to aquatic animals: a review with new data for freshwater invertebrates - PubMed
Published data on nitrate (NO3-) toxicity to freshwater and marine animals are reviewed. New data on nitrate toxicity to the freshwater invertebrates Eulimnogammarus toletanus, Echinogammarus echinosetosus and Hydropsyche exocellata are also presented. The main toxic action of nitrate is due to...
pubmed.ncbi.nlm.nih.gov