What you have described are two forms of fertilizer. Adding fertilizer with out knowing all the other water quality variables of the pond and your goals could cause a mess. When you built the pond was the soil tested? If so what did it show? Look at this link on water quality pages 16 - 20 including muddy water.
http://msucares.com/pubs/publications/p1428.pdf Also from SRAC
http://srac.tamu.edu/tmppdfs/11830457-471fs.pdf. 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").