If you have dinos you have my sympathies. They are an awful problem to get rid of. I've had (and seen) dinos hit tanks both of low nutrients and not-so-low nutrients .. I'm a bit skeptical that raising nitrates will really help you rid your tank of dinos. IMO the only thing that works is going lights out for a few days and starving them out that way.
Diatoms on the other hand .. if it's diatoms then maybe just relaxing the regime as suggested (or feed more
which always seems to work for me in producing nitrates!!!)
Good luck!