[Jeff Kropp]

check it out and provide comment.

Entering my typical doses, .5 tsp KNO3 and .25 tsp Enema in a 60 g tank, into the new fertilator yeilds an N/P ratio of 1.65. With the previous version, fertilator calculated an N/P ratio of 8.25 when provided with identical data. Which version calculates correctly?
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Jeff

 

[Jeff Kropp]

Which version calculates correctly?

This is my calculation for fleet enema as compared to the value output by the current fertilator.

Fertilator: .25 tsp of Fleet enema in 60 gal = 4.35 ppm

My math: .25 tsp = 1.23 ml x 131.36 mg/ml PO4 (from http://users.ev1.net/~spituch/Chemicals/chemicals.html#Phosphate from Fleet Enema) = 161.866 mg of PO4 added

since 60 gal = 227 liters, we can calculate that 161.866mg PO4/227 liters H2O = .713 mg/liter = .713 ppm

Which is correct? It seems to me, that the fleet enema calculation is very wrong in the current fertilator.
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Jeff