OK check it out i have two moonlight gouramis and two corey cats both of which like soft and acidic water exact readings are Gouramis like soft (50mg/l) and acidic (ph 6.0-6.5) corey cats like just about the same. My water readings are Total Hardness 300ppm and alkalinity about 40 to 80 ppm and ph about 7.4. What should i do and how should i compare ppm to mg/l. AAAAAAAAAAAAHHHHHHHHHHH im so frustrated... :mad2: :mad2: :mad2: :mad2: