I haven't used anything organic in the media. I'm worried about drawing gnats or other bugs. I will look into bumping the P though.
I don't think you will have problems with it as it is
im just giving you my picky personal preferences and youd asked about extra P in moms
if its working as it is I wouldn't be worried about it
those things aren't what will raw insects
fish could draw rodents but only outdoors
the hydrolyzed fish is not nearly as gross as the straight fish in odor