Fowler to reef.. nitrate question ..

I have a 200 G fish with live rock fr about 10 months now and want to shift
completely to a reef setup. All the required equipment is there. Lights,
Eheim Wet/Dry, Eheim canister, powerheads, Uv, Skimmer, Chiller etc.

Problem is the nitrates keep increasing till I water chnage. Is there any
way to keep nitrates stable at the bare minimum? Do i need to add a
denitrifying filter? Add Live rocks? Add Live Sand? What shld i basically do
to make sure the nitrates dont rise? Ive been reading and I actually even
read somewhere that a wet/dry will even enhance nitrate production! So do I
dump it ? and substitute with what?

Looking fr a simple and longterm solution and I know the best advice will be
here!

Thanks,

Ajay