Any plans to play with liquid Urea Ammonium Nitrate solution? Either 28% or 32%?
if you are referring to NH4NO3, Urea Combo, this has been done many times by me and others, seachem also does this with their product.
for those who are looking to reduce the amount of NO3, S, Cl etc, they can Use NH4CO3, KHCO3, KH2PO4 combo, you can also add Urea in the mix, this solution stays clear without the need for Asrobic acid or potassium sorbate, the solution will continue to form bubbles due to CO3/CO2 reactions.
in addition, people can also use CaNO3, MgNO3 combo to get their Ca and Mg, i use certain chemicals for my RO water, where i have reduced the amount of increase in TDS that you would get from most chemicals, also reducing the amount of water changes. suggestions for those who use high amount of SO4/Cl based chemicals, they should reduce the amount of these two if possible, they just add additional TDS and not needed by plants in excess amount.