most experts say "don't use pH chemicals unless you have to."
odds are very good that your tap water lies in the 6 to 8 range. most tropical fish live very well in this range.
at your next water change
(1) check the pH of your water with just the chlorine-removing chemical added
(2) if this pH is between 6 and 8, stop using Proper7. you don't need it.
(3) don't do anything else different. change no more than 1/4 (one-fourth) of the water a pH between 6 and 8 won't hurt most fish, but a very big and sudden change will hurt your fish a lot. if you just stop using the chemicals, regular water changes will slowly and safely change the pH of your tank.
if you have any questions about these instructions, ask them and i know someone will be glad to explain things to you in a nice, respectful manner.