Planted Tank Guru
Join Date: Jan 2010
Location: Contra Costa CA
Fish food usually supplies a fair amount of N, P and most traces.
Fish food usually is short of K, Ca and Fe.
Are you using K2SO4 instead of KNO3? If you omit the KNO3, you need to add an alternate source of K.
I would keep up with full EI dosing. It won't hurt anything, and you will find out how your tank will behave later by practicing now.