ok whether or not your water is drinkable is more or less irrelevant. i had made one of my initial posts before you said you were using anti-chlorine (which is the main issue with conditioning the water, so keep using that). what is in your "water conditioner" that is different than just a dechlorinator? does it remove ammonia too? if it isn't made for aquariums then don't use it.
the color of the fish may take a little time to go back to normal as it still looks pretty dark in these pics. and yeah, probably wise not to turn on the lights just to snap a shot.
your nitrites should read zero, so keep checking your water parameters every day until they do go down to zero. don't worry about nitrates.
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jordan -
in short, i use a cichlid sand substrate which contains a large amount of aragonite to buffer the pH in the system. since switching to this i have not had any of the problems i used to with the Cubans (including the problems that killed a couple...not fun).
water changes are every week or every other week, about 1/3-1/2. feeding goes from either every other day to two days fast in between feedings. temp is 80-82F. hope that helps--
--solomon