fluvic acid

Hey guys so I'm not sure about this, but do I need to use less nutes if I'm using Mr Fluvic in hydroponics? Right now I'm at about 550 ppm and I'm going to flip tonight to 12/12 light cycle. I heard bc the nutes become so "available" that I need to use alot less than what to manufacturer says...

Hey just wondering what everyone's using for humic acid/fluvic acid/seaweed in hydroponics DWC? What's the best one out there that may possibly contain all three. I like general hydroponics but I'm open to using other brands.