someguythatsings,
Befiore offer too many opinions I think we need a few more facts and some general information. Can you give a brief history of the tank, when it started, what is in it in terms of substrate, water type, fish, other living creatures, plants etc. You mentions putting in the chemical

you should but do not say what specific chemicals are involved. It would also be nice to know the specific water parameters including at least: ammonia, nitrite, nitrate, hardness, pH, and alkalinity. You alsdo mention differnt sources of water so underastanding that a bit better would be helpful. And lastly what type of maintenance routine if any have you been following.
Sorry for so many questions but they all contribute significantly to the condition of the water and tank overall.