i had two jardinis about 2in each i noticed what i think was ick on one fri. and bought kordon herbal ich attack that night the one was dead the next morning the other had died i increased the temp from 80 to 82 and add a little extra salt the jardinis at the store Have ick as well but don't seem to be affected like mine were does anyone have an idea of what could have killed them i want to replace them but i want to make sure the tank is fine