Hello! My first freshwater aquarium is about 4 months old and now houses 9 African Cichlids and three tiny catfish. About two weeks ago I bought a TDS meter and have had consistent readings with the occasional +/- 10 ppm. Tonight's reading is 185ppm. From everything I'm reading, this is pretty much spot on where it should be. Being that I'm a novice and fairly compulsive, I am questioning whether or not I'm accurately interpreting the information I'm finding online. Are there any knowledgable members who can confirm that this is an ideal reading? I'm overly anxious that something could go wrong at any moment and turn my aquarium toxic. The fish have names now, ya know? Thanks!!!!!