Sorry If Information Offends, I do Not Mean to Offend
I think you simply have hard water, unless you are into some sensitive species, your water is just fine. No need to dose Nitrates
PlantedRich, indeed there is much concern about Chlorine in the US, the Safe Drinking Water Act (SDWA) of 1974 had non-enforceable health goals regarding residual disinfectants based on possible health risks and exposure over a lifetime. This led to maximum residual disinfectant level goals (MRDLG). In 1996, SDWA was amended to “balance” risk of disinfection byproducts (DBP) with microbial pathogens.
The EPA established highly enforceable regulations, known as Stage 1 DBP rules, EPA 815-F-98-010, EPA 815-F-98-009, December 1998 called maximum residual disinfectant level (MRDL). Stage 2 DBP rules EPA 815-F-05-003, December 2005 seeks to limit DBP exposure specifically total trihalomethanes (TTHM) and five haloacetic acids (HAA5).
The result is that in the US the MRDL is 4-ppm Chlorine (as Cl2), 4-ppm Chloramine (as Cl2) and 0.8-ppm Chlorine dioxide (as ClO2). It should be noted that generally 0.2-ppm Chlorine is the minimum residual disinfectant required leaving the treatment plant. Any state may set more stringent rules.
The UK operates on a less formal set of rules, while the European Union is moving away from Chlorine entirely.
Not sure, this helps… Oh well… I am part of a group being excoriated for providing additional information, particularly, if it can be documented, in another thread. I mean no harm.
If your Guru tells you otherwise and you are true believer that is okay I will not argue the point.
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I pretty much limit what I say to things that anyone can easily verify from recognized references or by direct observation. If it is my opinion I say so.