ok, i checked the tap water and its 0 - zero
tank size 180ltr
Filter fluval 4+
11 neons, 3 discus, 3 mollies, 2 angel fish, red tail shark, 2 dwarf gourmai's (one swim bladder), 6 guppies, 1 siamese male
only added swim bladder treatment but i did that BEFORE friday so the 50% should have...