Recent Water Quality Issues
About 2 weeks ago I completely my routine weekly water change and about 80% of my live stock died within 2 days. I checked my water parameters and everything appeared fine, however the water was cloudy with a white tint to it. I have had this tank for over 2 years and always follow the same routine. I use my python to drain about 25% of my 75gal tank and very, very slowly fill it back up with cold water directly from the tap (I fill it up slow enough to keep a steady temp 82degf). I always add prime, flourish, flourish iron, Instant Amazon and 1TBL spoon of aquarium salt while filling. This time however I lost 12 rummy nose tetras, 5 cardinal tetra, 1 ram, 2 cory's, & 3 clown loaches in 2 days. The survivors are 2 clowns, 1 ram, several Oto's (none died), and 2 zebra daniels (originally used to cycle tank). Also the oto's seemed extremely active during this period, I even saw a couple that appeared to be mating.
Anyway I was wondering if anyone else every experienced such and issue. I currently live in Gwinnett County (Atlanta, GA). Right now the only thing that I suspect is that the water source has somehow changed recently. Any input is greatly appreciated.
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75g Planted, 10lb CO2, 2x65Watt PC, 2x40Watt OD Fl,
20lbs eco, 70lbs SMS Charcaol, dose w/PMDD,
ph 6.4, temp 84 degF, hardness 50-80ppm, Alk 40, NO3=5ppm, NO2/NH3-N = 0,
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