I used to be a huge golden water enthusiast (1:15 urine to water). But no matter how careful I was, the grow room eventually took on an odd smell.
Then I switched to a salt-based approach. I started adding different salts, micro + trace elements etc and fell in love with the precision.
Being able to change one single element (if pH allowed it), like adding phosphoric acid or using a salt-based source like monopotassium phosphate to address P issues, sealed the deal for me.
If you notice your plant needs nitrogen and you have a nerd mindset, I'd recommend using KNO₃ and/or Ca(NO₃)₂ to increase the nitrogen; you get extra K and/or Ca as an added bonus. Or if the pH is a bit high, you could use diluted nitric acid and get the pH down and the nitrogen up. Does golden water work? Yes, for veg in particular, but skip the golden shower unless you plan on growing outdoors.
The nerd-route PMDD-style will require many different salts and take some extra steps to get things running smoothly.
If you want to increase the nitrogen in the soil, how about skipping the golden water and just embracing the PMDD approach?
Example 1.0 -- adding ~1,631mg KNO₃/liter of water will net you ~0,226mg/l (0,226ppm) elemental N, and this corresponds to 1mg/liter (1 ppm) nitrate (NO₃).
Example 2.0 --adding 1mg KNO₃/liter of water will net you ~0.1385mg/l (ppm) elemental nitrogen. This corresponds to ~0,613mg/l (ppm) nitrate (NO₃).
So if you already have nitrogen in your current mix, but it's too low, and you want to increase nitrogen further, you could keep your current blend but adjust with KNO₃.
As mentioned above a 1ppm increase of NO₃ takes 1,631mg KNO₃/liter of water and lets say you want a 25ppm increase in the nitrate content. 25ppm * 1,631mg/l = 40,775mg/l
Answer: 40,775mg KNO₃ is needed in every liter of water to increase NO₃ by 25ppm.
If you look at this wall of text and everything is just a big mess. --Look in the nutrients section and before your next grow, pick a brand and search for a grower using those nutrients you just selected.
Pick a grower that has diaries focusing on the full picture --documenting feeding; the more detailed instructions, the better.