Thank you, as of this morning my tank was reading 0.25 ammonia, 0 nitrite, and 20ppm nitrate. I have a hard time distinguishing between 10 and 20 nitrate, but its definitely orange and not red like 40ppm. pH was 7.4. I did a 90% water change after the test and the pimple area is looking better, but still there.
My tap comes out 0.25 ammonia, 0 nitrites, 0 nitrates. I suspect high chloramines. The pH of tap is 7.2 but off gasses to 6.0. I run crushed coral in the filters to buffer pH. I use the API master test kit and have been feeding sparingly (once every other day) but the fish has taken a liking to the moss balls and eats them when shes feeling hungry. She is the only inhabitant of the 40 gallon tank, upgraded to get her a friend once the parameters and health stuff is in check.
Water is 70 degrees. I have not medicated for anything. I generally do water changes twice per week of 25-30% If I get lazy I do 50% once per week. I have two filters, an Aquaclear 30 and an Aquaclear 70. She has been lethargic and bottom sitting sporadically. I use Fritz ACCR as a conditioner.
These were the best pictures I could get today:
Describing it as a pimple is accurate, except its red and sore looking, like a pimple you tried to pop too early.