thx for the responses. they where only 2 weeks old. it is humid and burning up in here too. i can't get any dragon flies since all the water around me is polluted and instantly kills most fish. and also i will focus on that heater. i cleaned the tank & plants, an i will re-try the same betta's. thanks, also i put it in the diesease section, since i thought this parasite or something needs to be heard from professinal on knowing of diseases (and someone told me put it in the disease section) of this