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- Jun 5, 2019
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I am trying to figure out an appropriate dilution for Phosfree for my tank. The MSDS indicates it is straight lanthanum chloride, and the dosing instructions indicate the scale of application is at the absolute other end of the continuum relative to what my tank would need. The back of the bottle (pictured below) says that 500mL would drop 300ppb of phosphate in 10,000 gallons of water.
My tank is 150G of actual water volume and has been measuring 0.10ppm or so on Hanna ULR.
So adjustment factor “V” for the volume of water differences:
V: 150G / 10,000G = 0.015
And adjustment factor “C” for for relative concentration differences (and 0.1ppm = 100ppb)
C: 0.10ppm / 300ppb = 0.333
Dosage adjustment that would theoretically take my tank to zero…
V * C * Recommended Dose
= 0.015 * 0.333 * 500 mL
= 2.5 mL
Does this check out right to you guys? Would probably dose half that amount and see what happens if someone can double check me.
Thanks!
My tank is 150G of actual water volume and has been measuring 0.10ppm or so on Hanna ULR.
So adjustment factor “V” for the volume of water differences:
V: 150G / 10,000G = 0.015
And adjustment factor “C” for for relative concentration differences (and 0.1ppm = 100ppb)
C: 0.10ppm / 300ppb = 0.333
Dosage adjustment that would theoretically take my tank to zero…
V * C * Recommended Dose
= 0.015 * 0.333 * 500 mL
= 2.5 mL
Does this check out right to you guys? Would probably dose half that amount and see what happens if someone can double check me.
Thanks!