I have had my fish tank for nearly 2 years and I have recently redecorated it but since I have been having a lot of trouble with it. It stinks of rotten egg you can smell it as soon as you walk thought he door and my plant has died. I have also had some White webbed like substance which I think was fungus but it was all over my tank and formed a layer on top of the water. The water is cloudy and very dirty even though I use the filter, and I would really like some new fish but I can't incase this might harm them please help as I don't know what to do or how to get rid of the smell I feel so sorry for my fish. Please help!