erickson33
New Member
Good day! I'm just wondering why is Ammonium Phosphate not included in the compound selection? Thanks
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Nutrient Dosing Calculator
- Thread starter erickson33
- Start date
Hi all,
Welcome to UKAPS
If you take the best case scenario of monoammonium phosphate ((NH4)(H2PO4)) it contains 12% elemental nitrogen (N) and 27% elemental phosphorus (P). Because the form of Total Ammoniacal Nitrogen (TAN) is <"pH dependent"> that ammonium (NH4+) can become ammonia (NH3) and you have to be very careful about ammonia toxicity.
You can use dipotassium (K2HPO4) and/or monopotassium phosphate (KH2PO4), and the have a useful (and non toxic) cation potassium (K+) and anion phosphate (PO4---). Using potassium nitrate (KNO3) (or even urea (CO(NH2)2)) allows you to add fixed nitrogen in a safer form etc.
cheers Darrel
Welcome to UKAPS
It is literally just the ammonium (NH4) content. I haven't looked, but I'm guessing ammonium nitrate (NH4NO3) isn't listed either and for the same reason. If you didn't have any livestock? Either would be fine
If you take the best case scenario of monoammonium phosphate ((NH4)(H2PO4)) it contains 12% elemental nitrogen (N) and 27% elemental phosphorus (P). Because the form of Total Ammoniacal Nitrogen (TAN) is <"pH dependent"> that ammonium (NH4+) can become ammonia (NH3) and you have to be very careful about ammonia toxicity.
You can use dipotassium (K2HPO4) and/or monopotassium phosphate (KH2PO4), and the have a useful (and non toxic) cation potassium (K+) and anion phosphate (PO4---). Using potassium nitrate (KNO3) (or even urea (CO(NH2)2)) allows you to add fixed nitrogen in a safer form etc.
cheers Darrel
It is actually listed.
But yes, unless one knows what one is doing, it is best to keep away from ammonium compounds which can lead to catastrophic consequences, fauna wise.
I used nh4cl nh4so4. You need to be careful about pH, otherwise it can be toxic. In my opinion, urea works best as nitrogen. Its toxic level is very less than NH4.
