I HAVE BEEN HAVING LOTS OF TROUBLE WITH MY FISH TANKS AT THE MOMENT. LOTS HAVE BEEN DYING AND I DON'T KNOW WHY. I HAVE BEEN LOOKING ON THE NET ABOUT MY LARGE ANGELFISH AND ACCORDING TO ONE SITE THE SYMPTOMS MINE HAVE IT SEEMS TO CALLED ' ANGELFISH AIDS' BOTH OF THEM NOW ARE AT THE TOP OF THE WATER HEADS STAIGHT UP. I AM WORRIED THAT MY WHOLE TANK WILL HAVE THIS AND HOW ON EARTH DO I TREAT THE REST OF THE FISH. IT SAYS THAT OTHER FISH SHOULD NOT BE AFFECTED BUT AS I SAID I HAVE LOST LOTS OF OTHER FISH PARTICULARY ORANGE SWORDTAILS AND BLUE NEONS. I WOULD BE GRATEFUL FOR ANY HELP..........