Ok, thanks to Mindy I have Sodium Nitrate (NaNO3)
She has a post kicking around on the mixing instructions, with some assistance from RHF.
So, I mixed 30g NaNO3 with 500mL of RODI water.
10mL adds 440mg NO3 (based on molecular weight, NaNO3 is 73% nitrate by weight)
My combined volume is roughly 511L (135gal)
440mg/511L = .86mg/L (ppm)
.86ppm/10mL = .086ppm/mL
1ppm/.086ppm/mL = 11.62mL
So, in theory, I need 11.62mL solution to raise nitrate by 1ppm.
This should be interesting.
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