hi i need some help with my tank i have a 120gallon tank i am keeping 2 tiger oscars 2 green terrors 2 bumble bees2 black convicts 2 goldfish (large)2 plecos a jack dempsey a red devil 1 mbuna and 1 crayfish i only have 2 fullgrown fish in the tank the red devil and 1 pleco i am running a fluval fx5 with 3 120g carbon 3 150 g zero carb and a basket of biomax my levels in the tank read as follows on api test strips gh 180 max , kh 240 max, ph closest to 7.0 nitrite o-0.5 nitrate around 40 my water has been discoloring like a fog color an sometimes a greenish i have been using clearafiers but i dont want to keep adding chemicals to the water at least not all the time i use cycle 10 ml per 5g prime water conditioner 2-3 mls per 5g and and waste controll 10ml per 5g every water change i have also tried to add mor cycle to the tank itself as it cleared my tank after i first got the 55 i also have i also have 12 fish and a cray in my 55 4 chiclids and a a few larger tetras i also have a 405 fluval on my 120 to help with the messy eaters anything i am missing? i do know its overstocked but everything was in my 55 when i got it so haters pls i am doing my best to add more tanks i got all the fish from some dumbass who knoew nothing an tanks aint cheap to me but im doin my best an even my fish are thanking me lolany help would be greatly appreciated thanx