I Added White Spot Med And Now I Got Nitrite!

[Harlequins]

I treated my large tank with interpet 6 anti whitespot,tested water this morning and i have a nitrite of 0.25 !!!

What do i do? if i do a water change then i'll take out the meds if i don't then i'm leaving nitrite in the tank!!

I was careful when adding meds,can meds give a nitrite spike,ammonia still 0,i still test water once a day out of habit so i know nitrite was 0 yesterday!!

 

[Curiosity101]

How long has it actually been since you added the meds?

My advise would be 50% water change and add half of the original dose into the replacement water.

After the 50% change I would try to relax. If you still have a reasonable colony of the Nitrite Bacs then they will recover very quickly (I'd expect Nitrites to be 0 again in 24hours)