Pure Ammonia should be basic thus pH should go up. Run test on your tap. pH test before and after the addition of ammonia.
I do not know how high PO4 is but PO4 is an anion and with presence H+, can yield Phosphoric acid(H3PO4)?
NO3 is an anion and with presence of H+, can yield Nitric Acids (HNO3)? Old
detritus in the gravel will produce amino acids as decays then
NH3 as deamination takes place.
I believe Fetilizer can contribute to
nitrate and
phosphate. Do simple NO3, PO4 test on tap water. Then add some fertilizer, swirl and test for thos two and you may have your answer to Algae. This product may have contributed to high nitrate
It is not easy to wait and test and wait to go thru fishless cycle. Thus I personally would do cycling with fish and little know-how. At least i know for sure, cycling w/ fish will takes about 6 weeks on average. It seems many are worried about exposure to NH3,
NO2, but these can be well controlled via feeding, pwc, and of course amt of fish and tank size. With availability of Turbo Start (shipped overnight) which will reduce amount of water changes required to keep fish alive, one can still enjoy fish while cycling. ALthough never used this specific product but this is the only one which seems logical compared to similar products on the shelf (who know how long its been on the shelf before bottle is in your hand).
Once you have one tank well established, no need for fishless cycling if one is willing to take advantages of established tank.
Hang in there. You are almost there.
Similar Aquarium Fish Forum Threads 
..more people should have your patience before stocking their new/uncycled tanks..keep up the good work, are you reading a good book to pass the time? 
...maybe a little less barf and more Drooling, will keep the staff there happier
