Hello all. I would be gratefull if anyone could give mesome idea a sto why my bettas died over last weekend. I had a young male who was doing great, and three females all very colourful and active. Over the course of two days their eyes and then their heads turned white and sadly they passed away. no other fish in my tank have been affected and i cannot get a diagnosis of a disease that has the same symptoms. Water quality was good and i had bought them approx three weeks before this happened. any help would be appreciated as im really wary about getting some more in case its a problem on my part. Thanks in advance Nick