Help! White algae and cloudyness

I have a 40 gallon tank with a tang, goby, clownfish, etc. I thought they had ich so I treated the tank with organi-cure three times now. I've done regualer water changes, and now the tank is extrememly cloudy, with white fuzzy algea growing everywhere (not like long strands). All levels are stable, and within ranges. I don't know what to do- I've already had one fish die. Any suggestions???

 

Organi cur is that the deep blue looking stuff in a little squeeze bottle with orange lettering I think it is ? If so Carbon lots of carbon . Thats stuff never works just makes a mess the tank will settle in but it will take a few days week maybe . Just run carbon about 1/2 cup for 3 days and change it out and do that during a two weeks time it should be fine I think the white stuff you are seeing not a plant but a fungi or bacteria in reaction to the treatment.