So Ive had my tank fishless for a couple weeks now since my "devils ich attack episode" Heat cranked up to 84, to speed up the lifecycle ect.

I tested my water today just to see where it was at with some tetra easy strips.

nitrate-20 ppm
nitrite-5 ppm
ammonia -0

I didnt add ammonia from the get go, just let the tank run.

I went to petsmart today to look for ammonia additives and couldnt find anything that added ammonia to the tank but, that reduced it? Anyone have any suggestions on what to use?

What dosages should i be using of it? (i have a 55 gal freshwater, no fish)