What should I do now? Water change, add salt, add more Prime? Guide me in the right direction.
Thanks.
All in all things look good enough. The Kh number is lower than I like, but it is not detrimentally low. The nitrite is of course higher than desired, Salt will protect your fish as Happychem said earlier. I personally would go with about 1/4 teaspoon per gallon. it does not take a lot of Cl to block nitrite. Once you add 1/4 teaspoon per gallon (well mixed with water before adding) then each time you do a water change add 1/4 teaspoon per gallon of change water only. the salt doesn't go away, so there is no need to dose the whole tank for a partial water change. Water changes are still and always will be your best friend. I personally would not let nitrite go above 0.5 ppm. Most people would not let it go that high. Once ntrites quit reading on your test, then you can stop adding salt to the change water. eventually all of the salt will get dilluted out with regular maintenance.
Kh is one to watch. it's about where I expected based on your Ph numbers. Kh is consumed through natural processes in the tank. I would test it every day or 2 and keep an eye on it. if it does not drop significantly from one water change to the next then I would not worry about anything. if it is used up faster than your tap water can replace it then crushed coral or aragonite in the filter will keep things stable. I would not worry about it unless you see a drop though.
Now relax and enjoy your Oscars. the prescence of nitrates indicates some bio-activity so you cycle is at least partially estabilished, the ammonia that reads after water changes with Prime will be eaten up by your bio-filter. So once the cycle is going good you will only see the change water ammonia for a short period after water changes.
For future reference, there are test kits available that seperate ammonia and ammonium. I do not know brand names nor do I think there is a need to own one right away, but before your current test kit is used up, do some research and next time buy a brand that can distinguish btween ammonia and ammonium.
Roan, I am not sure how this works, but my understanding always was that the sodium thisulfate used in most dechlorinators actually removes/ changes chlorine into a safe compound. In other words it is gone or permanently changed. I can dechlorinate, and then test for chlorine immediatly and come up 0 every time. With chloramines, once the bond is broken and the Chlorine neutralized, then the ammonia remains and must be bound into ammonium. So in essence the way I understood it was that the chlorine was gone as soon as the dechlorinator hits it. I would be interested in anything you could drum up to help clarify this. You description does not match my understanding, but I have not researched the chemical reactions at all, so I'm working somewhat with assumed Knowledge.
Dave