First post? Can't find it.
Urea's solubility in water is 1.08 g/mL @ room temperature. It does not need help.
Excess root mass should be dissolved through enzymatic action (cannazyme), not acids- acids/bases are nonselective and will kill living tissue as well as dead, while enzymes and soil beneficials are safe to use on a living plant.
I don't mean to sound harsh but Chemistry is not a matter of opinion, it's science.