I finally found the chemical composition of fish fertilizers, I reviewed the results of 10 samples and was not at all impressed with the chemical composition. High Sodium was the most worrying and I did notice an extremely high EC when fish ferts are mixed with water. Ca low, Na very high, Mg low, Al high, Fe low as examples. Nothing there to be impressed with at all or to think it might be helpful. I read that most fish emulsion is supplemented with chemical fertilizers at at the factories to give them the stated N P K. to improve marketing and that is one reason why some are not OMRI listed. I am trialing some and think the only reason it might be useful is the proteins and amino acids or cleating action it might contain or develop when used. Otherwise I remain extremely skeptical.
I was sceptical too and I would agree with the findings.. here in India we prepare this ourselves and specifically use sea water fishes rather than farmed fish or pond fish due to the increasing level of toxic minerals in them..
