No that fert will work but check the alkalinity to be sure it is over 20. If not add ag lime. Then go slow until you have a season of results to gauge results.See this http://forums.pondboss.com/ubbthreads.php?ubb=showflat&Number=96127#Post96127

If the alkalinity is good and I have added standard pond fert ( water sol 10-52-4) and the result is not good enough I will add some N as I know it is the limiting factor. P is most often the limiting factor and if I have added it without good results then I know its N limited. But keep in mind I have 20+ years experience with these ponds. At the PB V con we had a speaker on N limited ponds and the probability of it producing Cyanobacteria (blue-green algae) rather than phytoplankton.