Nutrient reducer during cupramine

Hello
Im treating my display tank with cupramine, have 250 gallons system FOWLR,
Normally use Nopox to keep no3 under control and lanthanum reactor, to keep po4... Right now that im treating cupramine. I did stop (nopox, lanthanum and skimmer)
I think the no3 and po4 will rise,, i wouldnt like this, but i dont know if can I use them (skimmer,nopox and lanthanum reactor) during treatment?
What do you think?
Can I use them???
Thank you
 
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