Terrestrial Plant Fertilizers for Aquarium

I gather an N-P-K ratio of 10-1-20 or 10-1-10 is desired in a planted
aquarium. Most Terrestrial Plant Fertilizers have way too much phosphate.
But how about the ones that don't like these two by Schultz (see links
below). Would they be safe to use in a planted tank?

Thanks

http://www.schultz.com/irongreen.htm
http://www.schultz.com/lawnprod.htm