i have lost 25 fish in the last 3 days in my juwel trigon 190 tank it has been set up for about 1 month using water and filter sponges from my juwel rio 125 which was set up for 18 months water stats have been fine ammonia 0 nitrite 0 nitrate 5 ph 7.6 using liquid tests and still are i had some new penquin tetras about a week ago so i think these must of passed a infection on to my fish i have used king british ws3 white spot terminator and added some melafix i have taken the carbon filter out of the juwel filter and raised temp to 28c it is all my small fish which has died all different tetras and 2 panda corys so i have left 5 blind cave tetras 1 pearl gourami, 3 corys 1 clown plec and 1 queen arabesque plec when they die the fish seem to be twiching then just go on there side and then die the fish are not at the top gasping for air just swimming around i use a juwel air diffuser so plenty of oxygen in water i not sure white spot looks like sois it ok to have put in ws3 ? i'm well gutted about this and welcome any comments ,suggestions thanks