All the post referencing Bens Best Guess chart have confiused me about FC levels. Aren't we shooting for 1.5 - 3ppm. Dont we run into problems when it starts getting higher( burning eyes, green hair)?
Thanks
R.
Bens Chart
All the post referencing Bens Best Guess chart have confiused me about FC levels. Aren't we shooting for 1.5 - 3ppm. Dont we run into problems when it starts getting higher( burning eyes, green hair)?
Thanks
R.
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