good evening what's happening but I find dead fish the cardinals and Puntius titteya I'm posting photos to be sure the tests performed are all good ammonia 0 nitrites 0 nitrates 0 only thing I don't know if it's her because two weeks ago I added a bit of allophane bottom the jbl kh test at the first drop immediately yellow is zero? and then the cardinals have been in a corner for days