I would not use an organic fert on a first time pond fert program. To many things can go wrong. Especially with no aeration in a southern pond. I might use it after I had several years experience with fert a particular pond. See the thread below and the SARC info. Every pond is different and you have to know what you are doing with that pond. Control is a must. You have none with organic as noted. See this thread from the archives.
http://www.pondboss.com/forums/ubbthreads.php?ubb=showflat&Number=96127#Post96127http://www.pondboss.com/forums/ubbthreads.php?ubb=showflat&Number=124946&fpart=1Fertilization of Fish Ponds - SRAC
Organic fertilizers, such as cottonseed
meal, are used in combination
with inorganic fertilizers to
prepare larval fish ponds (see
SRAC publication 469). Organic
materials are generally not recommended
for fertilizing recreational
farm ponds, as excessive amounts
may lower dissolved oxygen to a
critical level, possibly killing fish.
These fertilizers also can promote
the growth of undesirable filamentous
algae (commonly known
as �pond moss� or �pond scum�).
Individual ponds respond differently
to identical fertilizer application
schedules. The recommendations
in Table 1 are suggested
rates only. The number and frequency
of applications necessary
to obtain a satisfactory bloom will
vary from pond to pond. I