algae and bacteria bloom

my tank water is now cloudy and green !!!
what should i do ??
been doin 1/3 water changes daily but doesnt seem to get any better...
!!!!

Buy a UV sterilizer. If the tank is smaller (up to 100 gallons/400 liters) you could get an internal unit with a built in powerhead ( example 1 ). If the tank is bigger you might need to get some kind of UV filter that attaches to a power head or pump.

I installed UV filters on my tanks and have never had green/cloudy water problems again.

thanks,
the tank is a 550 gal , i would need something bigger than that .

been readin up other forums ,
seems like uv sterilizer is the way to go for crystal clear water.