Well I went to the pet shop and they explained what may be the cause of the fish death. Some sort of parasite. They advised me to do a water change more often. It means you have to let water out of the fish tank itself , not just ad new water all the time. They also said that tap water is under pressure and I can’t just ad the water directly to the fish tank. I have to wait 48 hours or so for the water to change pressure before I add it to the tank. Hopefully this will change the situation as I want to buy some nice new fish again. It looks empty with just 4 fishes in it .
Jul
08