You can get a TDS
(total desolved solids) meter that can test your water. As a reefer one of our first choices is what water source to use. I think it's been proven over the years that Reverse Osmosis water is the best for your tank. It removed most of the unwated stuff from your water so your coral can thrive. Some chose to use tap with additives or letting it rest to let the clorine evaporate. This isn't the best choice as it will lead to algae in the futuer and could cause issues for your inhabitants. You're fighting your new tank right now and things seem to be going off course. My advice would be to either invest now in an RO
maker or buy RO
from the store. You could get 15 gallons for probably under $9 I'd assume.
I have no idea where you're from so I have no idea what's in your city water so you'll have to make that call.
Sorry, to try and help you I snooped to see if you have posted pictures of your tank. I notice that less than 2 months ago you posted that your tank was just water and salt so I'll assume that you went from nothing to what you listed above in under 2 months. This is really fast for saltwater. Taking a tank from empty to capacity in 2 months is a real shock to the system, amonia isn't surprising and I'm willing to bet you see an algea outbreak soon. Been there, its exciting to get going.
My advice, take it slow now. Water change water change and more waterchanges until you get your parameters in check and let it settle in.