Everything - ammonia, nitrite, nitrate, and ph. Have you read the cycling articles yet?
Be sure to shake all of the little bottles well before using them, especially the nitrate bottles. Shake it for a minute or two since the reagent is in suspension and it will settle to the bottom of the bottle between uses.
Sorry you lost one of your fish. Hopefully things will start lookibg up for your remaining fish. When you have the results, post them here.
Yes I have.
Ammonia 0ppm didnt shake the bottle because it didnt tell me to, Opps?
Nitrite 0ppm didnt shake the bottle because it didnt tell me to, Opps?
Nitrate 5.0ppm Shake
ph 6.0