Hello!
I have had fish tanks forever but have recently been having problems with my 110g tank. I had 2 fluvel filters and 1 stopped working (I'm thinking about purchasing the fluvel fx5 to replace both filters) and then my plecostomus died. I went and got another and then it too died. My other fish (red tail sharks/bala sharks) are happily swimming still. The tank has been cleaned in between but alway has this greenish hue to it I can't seem to get rid of. Also has cobweb type stuff that clings to the plastic deco plants that keeps coming back. The gravel looks to be clean but when I clean it it's a mess again. Any thoughts would be great! Thanks!
to AA! You should post in the freshwater section to get some better help. 
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