HELP HELP HELP!!! I have had a tropical tank for 2 months now, i have lost only 2 Guppies so far due to Nitrate, now i have that under control and everything great. i had 4 new fish bought for me on sunday. I went home yeaserday and all of my Neons were dead x 5. 1 of my Tetras and 1 of my Guppies were also dead. all i could see was the guppie who had a lovely red tail was white and one of my other Guppies which is still alive when he swam his tail was like flaking. Is this Fin rot or White spot i hate it when they die, please someone help me 
