Why not chelated? When perusing available products, it seems most of the individual micros are chelated in the package.
not all the chelated powders are compatible in a concentrate
hydro buddy wont even let you use some
I use Fe dtpa which might be considered chelate I cant recall....
I think you can get away with zinc and or Mn chelate but ive not had good luck with changing it up
personally I just prefer the Zn sulfate and Mn sulfate... for me they dissolve bteer in the concentrate
I ran my micro nutes 50/50 one time chelate/sulfate and it was fine but I didn't see any improvements over not using it that way
I know many nutes have chelates and advanced uses it as advertising but ive just not seen the need